dc46480aa4
Added experimental NVidia Riva TNT2 emulation (patch from MoochMcGee); ASUS P/I-P54TP4XE, ASUS P/I-P55T2P4, and ASUS P/I-P55TVP4 are back; National Semiconductor PC87306 Super I/O chip now correctly reenables devices after a chip power cycle; Several FDC improvements and the behavior is now a bit closer to real hardware (based on actual tests); Added MR Intel Advanced/ATX with Microid Research BIOS with support for 4 floppy drives and up to 4 IDE controllers; Added floppy drives 3 and 4, bringing the maximum to 4; You can now connect hard disks to the tertiary IDE controller; Correct undocumented behavior of the LEA instruction with register is back on 286 and later CPU's; Pentium-rea models with Intel chipsets now have port 92 (with alternate reset and alternate A20 toggle); Overhauled DMA channel read and write routines and fixed cascading; Improved IMG detection of a bad BPB (or complete lack of a BPB); Added preliminary emulation of PS/2 1.44 MB and PC-98 1.25 MB 3-mode drives (both have an inverted DENSEL pin); Removed the incorrect Amstrad mouse patch from TheCollector1995; Fixed ATAPI CD-ROM disk change detection; Windows IOCTL CD-ROM handler now tries to use direct SCSI passthrough for more things, including obtaining CD-ROM capacity; The Diamond Stealth32 (ET4000/W32p) now also works correctly on the two Award SiS 496/497 boxes; The (S)VGA handler now converts 6-bit RAMDAC RGB channels to standard 8-bit RGB using a lookup table generated at emulator start, calculated using the correct intensity conversion method and treating intensity 64 as equivalent to 63; Moved a few options from the Configuration dialog box to the menu; SIO, PIIX, and PIIX3 now have the reset control register on port CF9 as they should; Several bugfixes.
647 lines
29 KiB
C
647 lines
29 KiB
C
#include <stdlib.h>
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#include <math.h>
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#include "ibm.h"
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#include "device.h"
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#include "io.h"
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#include "mem.h"
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#include "timer.h"
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#include "video.h"
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#include "vid_pcjr.h"
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#define PCJR_RGB 0
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#define PCJR_COMPOSITE 1
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typedef struct pcjr_t
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{
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mem_mapping_t mapping;
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uint8_t crtc[32];
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int crtcreg;
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int array_index;
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uint8_t array[32];
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int array_ff;
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int memctrl;//=-1;
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uint8_t stat;
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int addr_mode;
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uint8_t *vram, *b8000;
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int linepos, displine;
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int sc, vc;
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int dispon;
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int con, coff, cursoron, blink;
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int vsynctime, vadj;
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uint16_t ma, maback;
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int dispontime, dispofftime, vidtime;
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int firstline, lastline;
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int composite;
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} pcjr_t;
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static uint8_t crtcmask[32] =
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{
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0xff, 0xff, 0xff, 0xff, 0x7f, 0x1f, 0x7f, 0x7f, 0xf3, 0x1f, 0x7f, 0x1f, 0x3f, 0xff, 0x3f, 0xff,
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0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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void pcjr_recalcaddress(pcjr_t *pcjr);
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void pcjr_recalctimings(pcjr_t *pcjr);
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void pcjr_out(uint16_t addr, uint8_t val, void *p)
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{
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pcjr_t *pcjr = (pcjr_t *)p;
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uint8_t old;
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// pclog("pcjr OUT %04X %02X\n",addr,val);
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switch (addr)
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{
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case 0x3d4:
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pcjr->crtcreg = val & 0x1f;
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return;
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case 0x3d5:
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// pclog("CRTC write %02X %02x\n", pcjr->crtcreg, val);
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old = pcjr->crtc[pcjr->crtcreg];
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pcjr->crtc[pcjr->crtcreg] = val & crtcmask[pcjr->crtcreg];
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if (old != val)
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{
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if (pcjr->crtcreg < 0xe || pcjr->crtcreg > 0x10)
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{
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fullchange = changeframecount;
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pcjr_recalctimings(pcjr);
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}
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}
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return;
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case 0x3da:
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// pclog("Array write %02X %02X\n", pcjr->array_index, val);
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if (!pcjr->array_ff)
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pcjr->array_index = val & 0x1f;
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else
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{
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if (pcjr->array_index & 0x10)
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val &= 0x0f;
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pcjr->array[pcjr->array_index & 0x1f] = val;
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if (!(pcjr->array_index & 0x1f))
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update_cga16_color(val);
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}
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pcjr->array_ff = !pcjr->array_ff;
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break;
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case 0x3df:
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pcjr->memctrl = val;
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pcjr->addr_mode = val >> 6;
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pcjr_recalcaddress(pcjr);
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break;
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}
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}
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uint8_t pcjr_in(uint16_t addr, void *p)
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{
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pcjr_t *pcjr = (pcjr_t *)p;
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// if (addr!=0x3DA) pclog("pcjr IN %04X\n",addr);
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switch (addr)
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{
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case 0x3d4:
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return pcjr->crtcreg;
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case 0x3d5:
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return pcjr->crtc[pcjr->crtcreg];
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case 0x3da:
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pcjr->array_ff = 0;
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pcjr->stat ^= 0x10;
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return pcjr->stat;
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}
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return 0xFF;
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}
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void pcjr_recalcaddress(pcjr_t *pcjr)
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{
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if ((pcjr->memctrl & 0xc0) == 0xc0)
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{
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pcjr->vram = &ram[(pcjr->memctrl & 0x06) << 14];
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pcjr->b8000 = &ram[(pcjr->memctrl & 0x30) << 11];
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// printf("VRAM at %05X B8000 at %05X\n",((pcjr->memctrl&0x6)<<14)+pcjr->base,((pcjr->memctrl&0x30)<<11)+pcjr->base);
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}
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else
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{
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pcjr->vram = &ram[(pcjr->memctrl & 0x07) << 14];
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pcjr->b8000 = &ram[(pcjr->memctrl & 0x38) << 11];
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// printf("VRAM at %05X B8000 at %05X\n",((pcjr->memctrl&0x7)<<14)+pcjr->base,((pcjr->memctrl&0x38)<<11)+pcjr->base);
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}
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}
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void pcjr_write(uint32_t addr, uint8_t val, void *p)
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{
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pcjr_t *pcjr = (pcjr_t *)p;
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if (pcjr->memctrl == -1)
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return;
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egawrites++;
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// pclog("pcjr VRAM write %05X %02X %04X:%04X %04X:%04X\n",addr,val,CS,pc,DS,SI);
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pcjr->b8000[addr & 0x3fff] = val;
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}
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uint8_t pcjr_read(uint32_t addr, void *p)
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{
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pcjr_t *pcjr = (pcjr_t *)p;
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if (pcjr->memctrl == -1)
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return 0xff;
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egareads++;
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// pclog("pcjr VRAM read %05X %02X %04X:%04X\n",addr,pcjr->b8000[addr&0x7FFF],CS,pc);
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return pcjr->b8000[addr & 0x3fff];
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}
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void pcjr_recalctimings(pcjr_t *pcjr)
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{
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double _dispontime, _dispofftime, disptime;
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if (pcjr->array[0] & 1)
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{
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disptime = pcjr->crtc[0] + 1;
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_dispontime = pcjr->crtc[1];
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}
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else
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{
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disptime = (pcjr->crtc[0] + 1) << 1;
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_dispontime = pcjr->crtc[1] << 1;
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}
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_dispofftime = disptime - _dispontime;
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_dispontime *= CGACONST;
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_dispofftime *= CGACONST;
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pcjr->dispontime = (int)(_dispontime * (1 << TIMER_SHIFT));
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pcjr->dispofftime = (int)(_dispofftime * (1 << TIMER_SHIFT));
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}
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static int ntsc_col[8][8]=
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{
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{0,0,0,0,0,0,0,0}, /*Black*/
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{0,0,1,1,1,1,0,0}, /*Blue*/
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{1,0,0,0,0,1,1,1}, /*Green*/
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{0,0,0,0,1,1,1,1}, /*Cyan*/
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{1,1,1,1,0,0,0,0}, /*Red*/
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{0,1,1,1,1,0,0,0}, /*Magenta*/
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{1,1,0,0,0,0,1,1}, /*Yellow*/
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{1,1,1,1,1,1,1,1} /*White*/
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};
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/*static int cga4pal[8][4]=
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{
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{0,2,4,6},{0,3,5,7},{0,3,4,7},{0,3,4,7},
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{0,10,12,14},{0,11,13,15},{0,11,12,15},{0,11,12,15}
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};*/
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void pcjr_poll(void *p)
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{
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// int *cgapal=cga4pal[((pcjr->col&0x10)>>2)|((cgamode&4)>>1)|((cgacol&0x20)>>5)];
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pcjr_t *pcjr = (pcjr_t *)p;
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uint16_t ca = (pcjr->crtc[15] | (pcjr->crtc[14] << 8)) & 0x3fff;
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int drawcursor;
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int x, c;
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int oldvc;
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uint8_t chr, attr;
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uint16_t dat;
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int cols[4];
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int col;
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int oldsc;
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int y_buf[8] = {0, 0, 0, 0, 0, 0, 0, 0}, y_val, y_tot;
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int i_buf[8] = {0, 0, 0, 0, 0, 0, 0, 0}, i_val, i_tot;
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int q_buf[8] = {0, 0, 0, 0, 0, 0, 0, 0}, q_val, q_tot;
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int r, g, b;
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if (!pcjr->linepos)
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{
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// cgapal[0]=pcjr->col&15;
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// printf("Firstline %i Lastline %i pcjr->displine %i\n",firstline,lastline,pcjr->displine);
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pcjr->vidtime += pcjr->dispofftime;
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pcjr->stat &= ~1;
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pcjr->linepos = 1;
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oldsc = pcjr->sc;
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if ((pcjr->crtc[8] & 3) == 3)
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pcjr->sc = (pcjr->sc << 1) & 7;
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if (pcjr->dispon)
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{
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uint16_t offset = 0;
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uint16_t mask = 0x1fff;
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if (pcjr->displine < pcjr->firstline)
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{
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pcjr->firstline = pcjr->displine;
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video_wait_for_buffer();
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}
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pcjr->lastline = pcjr->displine;
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cols[0] = (pcjr->array[2] & 0xf) + 16;
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for (c = 0; c < 8; c++)
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{
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buffer->line[pcjr->displine][c] = cols[0];
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if (pcjr->array[0] & 1) buffer->line[pcjr->displine][c + (pcjr->crtc[1] << 3) + 8] = cols[0];
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else buffer->line[pcjr->displine][c + (pcjr->crtc[1] << 4) + 8] = cols[0];
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}
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switch (pcjr->addr_mode)
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{
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case 0: /*Alpha*/
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offset = 0;
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mask = 0x3fff;
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break;
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case 1: /*Low resolution graphics*/
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offset = (pcjr->sc & 1) * 0x2000;
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break;
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case 3: /*High resolution graphics*/
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offset = (pcjr->sc & 3) * 0x2000;
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break;
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}
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switch ((pcjr->array[0] & 0x13) | ((pcjr->array[3] & 0x08) << 5))
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{
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case 0x13: /*320x200x16*/
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for (x = 0; x < pcjr->crtc[1]; x++)
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{
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dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
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pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
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pcjr->ma++;
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buffer->line[pcjr->displine][(x << 3) + 8] =
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buffer->line[pcjr->displine][(x << 3) + 9] = pcjr->array[((dat >> 12) & pcjr->array[1]) + 16] + 16;
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buffer->line[pcjr->displine][(x << 3) + 10] =
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buffer->line[pcjr->displine][(x << 3) + 11] = pcjr->array[((dat >> 8) & pcjr->array[1]) + 16] + 16;
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buffer->line[pcjr->displine][(x << 3) + 12] =
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buffer->line[pcjr->displine][(x << 3) + 13] = pcjr->array[((dat >> 4) & pcjr->array[1]) + 16] + 16;
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buffer->line[pcjr->displine][(x << 3) + 14] =
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buffer->line[pcjr->displine][(x << 3) + 15] = pcjr->array[(dat & pcjr->array[1]) + 16] + 16;
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}
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break;
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case 0x12: /*160x200x16*/
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for (x = 0; x < pcjr->crtc[1]; x++)
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{
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dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
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pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
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pcjr->ma++;
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buffer->line[pcjr->displine][(x << 4) + 8] =
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buffer->line[pcjr->displine][(x << 4) + 9] =
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buffer->line[pcjr->displine][(x << 4) + 10] =
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buffer->line[pcjr->displine][(x << 4) + 11] = pcjr->array[((dat >> 12) & pcjr->array[1]) + 16] + 16;
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buffer->line[pcjr->displine][(x << 4) + 12] =
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buffer->line[pcjr->displine][(x << 4) + 13] =
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buffer->line[pcjr->displine][(x << 4) + 14] =
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buffer->line[pcjr->displine][(x << 4) + 15] = pcjr->array[((dat >> 8) & pcjr->array[1]) + 16] + 16;
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buffer->line[pcjr->displine][(x << 4) + 16] =
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buffer->line[pcjr->displine][(x << 4) + 17] =
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buffer->line[pcjr->displine][(x << 4) + 18] =
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buffer->line[pcjr->displine][(x << 4) + 19] = pcjr->array[((dat >> 4) & pcjr->array[1]) + 16] + 16;
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buffer->line[pcjr->displine][(x << 4) + 20] =
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buffer->line[pcjr->displine][(x << 4) + 21] =
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buffer->line[pcjr->displine][(x << 4) + 22] =
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buffer->line[pcjr->displine][(x << 4) + 23] = pcjr->array[(dat & pcjr->array[1]) + 16] + 16;
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}
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break;
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case 0x03: /*640x200x4*/
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for (x = 0; x < pcjr->crtc[1]; x++)
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{
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dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
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pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
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pcjr->ma++;
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for (c = 0; c < 8; c++)
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{
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chr = (dat >> 7) & 1;
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chr |= ((dat >> 14) & 2);
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buffer->line[pcjr->displine][(x << 3) + 8 + c] = pcjr->array[(chr & pcjr->array[1]) + 16] + 16;
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dat <<= 1;
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}
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}
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break;
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case 0x01: /*80 column text*/
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for (x = 0; x < pcjr->crtc[1]; x++)
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{
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chr = pcjr->vram[((pcjr->ma << 1) & mask) + offset];
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attr = pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
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drawcursor = ((pcjr->ma == ca) && pcjr->con && pcjr->cursoron);
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if (pcjr->array[3] & 4)
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{
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cols[1] = pcjr->array[ ((attr & 15) & pcjr->array[1]) + 16] + 16;
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cols[0] = pcjr->array[(((attr >> 4) & 7) & pcjr->array[1]) + 16] + 16;
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if ((pcjr->blink & 16) && (attr & 0x80) && !drawcursor)
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cols[1] = cols[0];
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}
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else
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{
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cols[1] = pcjr->array[((attr & 15) & pcjr->array[1]) + 16] + 16;
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cols[0] = pcjr->array[((attr >> 4) & pcjr->array[1]) + 16] + 16;
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}
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if (pcjr->sc & 8)
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{
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for (c = 0; c < 8; c++)
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buffer->line[pcjr->displine][(x << 3) + c + 8] = cols[0];
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}
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else
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{
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for (c = 0; c < 8; c++)
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buffer->line[pcjr->displine][(x << 3) + c + 8] = cols[(fontdat[chr][pcjr->sc & 7] & (1 << (c ^ 7))) ? 1 : 0];
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}
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// if (!((ma^(crtc[15]|(crtc[14]<<8)))&0x3FFF)) printf("Cursor match! %04X\n",ma);
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if (drawcursor)
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{
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for (c = 0; c < 8; c++)
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buffer->line[pcjr->displine][(x << 3) + c + 8] ^= 15;
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}
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pcjr->ma++;
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}
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break;
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case 0x00: /*40 column text*/
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for (x = 0; x < pcjr->crtc[1]; x++)
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{
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chr = pcjr->vram[((pcjr->ma << 1) & mask) + offset];
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attr = pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
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drawcursor = ((pcjr->ma == ca) && pcjr->con && pcjr->cursoron);
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if (pcjr->array[3] & 4)
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{
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cols[1] = pcjr->array[ ((attr & 15) & pcjr->array[1]) + 16] + 16;
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cols[0] = pcjr->array[(((attr >> 4) & 7) & pcjr->array[1]) + 16] + 16;
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if ((pcjr->blink & 16) && (attr & 0x80) && !drawcursor)
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cols[1] = cols[0];
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}
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else
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{
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cols[1] = pcjr->array[((attr & 15) & pcjr->array[1]) + 16] + 16;
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cols[0] = pcjr->array[((attr >> 4) & pcjr->array[1]) + 16] + 16;
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}
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pcjr->ma++;
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if (pcjr->sc & 8)
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{
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for (c = 0; c < 8; c++)
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buffer->line[pcjr->displine][(x << 4) + (c << 1) + 8] =
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buffer->line[pcjr->displine][(x << 4) + (c << 1) + 1 + 8] = cols[0];
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}
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else
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{
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for (c = 0; c < 8; c++)
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buffer->line[pcjr->displine][(x << 4) + (c << 1) + 8] =
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buffer->line[pcjr->displine][(x << 4) + (c << 1) + 1 + 8] = cols[(fontdat[chr][pcjr->sc & 7] & (1 << (c ^ 7))) ? 1 : 0];
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}
|
|
if (drawcursor)
|
|
{
|
|
for (c = 0; c < 16; c++)
|
|
buffer->line[pcjr->displine][(x << 4) + c + 8] ^= 15;
|
|
}
|
|
}
|
|
break;
|
|
case 0x02: /*320x200x4*/
|
|
cols[0] = pcjr->array[0 + 16] + 16;
|
|
cols[1] = pcjr->array[1 + 16] + 16;
|
|
cols[2] = pcjr->array[2 + 16] + 16;
|
|
cols[3] = pcjr->array[3 + 16] + 16;
|
|
for (x = 0; x < pcjr->crtc[1]; x++)
|
|
{
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
pcjr->ma++;
|
|
for (c = 0; c < 8; c++)
|
|
{
|
|
buffer->line[pcjr->displine][(x << 4) + (c << 1) + 8] =
|
|
buffer->line[pcjr->displine][(x << 4) + (c << 1) + 1 + 8] = cols[dat >> 14];
|
|
dat <<= 2;
|
|
}
|
|
}
|
|
break;
|
|
case 0x102: /*640x200x2*/
|
|
cols[0] = pcjr->array[0 + 16] + 16;
|
|
cols[1] = pcjr->array[1 + 16] + 16;
|
|
for (x = 0; x < pcjr->crtc[1]; x++)
|
|
{
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
pcjr->ma++;
|
|
for (c = 0; c < 16; c++)
|
|
{
|
|
buffer->line[pcjr->displine][(x << 4) + c + 8] = cols[dat >> 15];
|
|
dat <<= 1;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (pcjr->array[3] & 4)
|
|
{
|
|
if (pcjr->array[0] & 1) hline(buffer, 0, pcjr->displine, (pcjr->crtc[1] << 3) + 16, (pcjr->array[2] & 0xf) + 16);
|
|
else hline(buffer, 0, pcjr->displine, (pcjr->crtc[1] << 4) + 16, (pcjr->array[2] & 0xf) + 16);
|
|
}
|
|
else
|
|
{
|
|
// cols[0] = ((pcjr->mode & 0x12) == 0x12) ? 0 : (pcjr->col & 0xf) + 16;
|
|
cols[0] = pcjr->array[0 + 16] + 16;
|
|
if (pcjr->array[0] & 1) hline(buffer, 0, pcjr->displine, (pcjr->crtc[1] << 3) + 16, cols[0]);
|
|
else hline(buffer, 0, pcjr->displine, (pcjr->crtc[1] << 4) + 16, cols[0]);
|
|
}
|
|
}
|
|
if (pcjr->array[0] & 1) x = (pcjr->crtc[1] << 3) + 16;
|
|
else x = (pcjr->crtc[1] << 4) + 16;
|
|
if (pcjr->composite)
|
|
{
|
|
for (c = 0; c < x; c++)
|
|
buffer32->line[pcjr->displine][c] = buffer->line[pcjr->displine][c] & 0xf;
|
|
|
|
Composite_Process(pcjr->array[0], 0, x >> 2, buffer32->line[pcjr->displine]);
|
|
}
|
|
pcjr->sc = oldsc;
|
|
if (pcjr->vc == pcjr->crtc[7] && !pcjr->sc)
|
|
{
|
|
pcjr->stat |= 8;
|
|
// printf("VSYNC on %i %i\n",vc,sc);
|
|
}
|
|
pcjr->displine++;
|
|
if (pcjr->displine >= 360)
|
|
pcjr->displine = 0;
|
|
}
|
|
else
|
|
{
|
|
pcjr->vidtime += pcjr->dispontime;
|
|
if (pcjr->dispon)
|
|
pcjr->stat |= 1;
|
|
pcjr->linepos = 0;
|
|
if (pcjr->vsynctime)
|
|
{
|
|
pcjr->vsynctime--;
|
|
if (!pcjr->vsynctime)
|
|
{
|
|
pcjr->stat &= ~8;
|
|
// printf("VSYNC off %i %i\n",vc,sc);
|
|
}
|
|
}
|
|
if (pcjr->sc == (pcjr->crtc[11] & 31) || ((pcjr->crtc[8] & 3) == 3 && pcjr->sc == ((pcjr->crtc[11] & 31) >> 1)))
|
|
{
|
|
pcjr->con = 0;
|
|
pcjr->coff = 1;
|
|
}
|
|
if (pcjr->vadj)
|
|
{
|
|
pcjr->sc++;
|
|
pcjr->sc &= 31;
|
|
pcjr->ma = pcjr->maback;
|
|
pcjr->vadj--;
|
|
if (!pcjr->vadj)
|
|
{
|
|
pcjr->dispon = 1;
|
|
pcjr->ma = pcjr->maback = (pcjr->crtc[13] | (pcjr->crtc[12] << 8)) & 0x3fff;
|
|
pcjr->sc = 0;
|
|
// printf("Display on!\n");
|
|
}
|
|
}
|
|
else if (pcjr->sc == pcjr->crtc[9] || ((pcjr->crtc[8] & 3) == 3 && pcjr->sc == (pcjr->crtc[9] >> 1)))
|
|
{
|
|
pcjr->maback = pcjr->ma;
|
|
// con=0;
|
|
// coff=0;
|
|
pcjr->sc = 0;
|
|
oldvc = pcjr->vc;
|
|
pcjr->vc++;
|
|
pcjr->vc &= 127;
|
|
// pclog("VC %i %i\n", pcjr->vc, pcjr->crtc[7]);
|
|
// printf("VC %i %i %i %i %i\n",vc,crtc[4],crtc[6],crtc[7],pcjr->dispon);
|
|
if (pcjr->vc == pcjr->crtc[6])
|
|
pcjr->dispon = 0;
|
|
if (oldvc == pcjr->crtc[4])
|
|
{
|
|
// printf("Display over at %i\n",pcjr->displine);
|
|
pcjr->vc = 0;
|
|
pcjr->vadj = pcjr->crtc[5];
|
|
if (!pcjr->vadj)
|
|
pcjr->dispon = 1;
|
|
if (!pcjr->vadj)
|
|
pcjr->ma = pcjr->maback = (pcjr->crtc[13] | (pcjr->crtc[12] << 8)) & 0x3fff;
|
|
if ((pcjr->crtc[10] & 0x60) == 0x20) pcjr->cursoron = 0;
|
|
else pcjr->cursoron = pcjr->blink & 16;
|
|
// printf("CRTC10 %02X %i\n",crtc[10],cursoron);
|
|
}
|
|
if (pcjr->vc == pcjr->crtc[7])
|
|
{
|
|
pcjr->dispon = 0;
|
|
pcjr->displine = 0;
|
|
pcjr->vsynctime = 16;//(crtc[3]>>4)+1;
|
|
picint(1 << 5);
|
|
// printf("pcjr->vsynctime %i %02X\n",pcjr->vsynctime,crtc[3]);
|
|
// pcjr->stat|=8;
|
|
if (pcjr->crtc[7])
|
|
{
|
|
// printf("Lastline %i Firstline %i %i %i %i\n",lastline,firstline,lastline-firstline,crtc[1],xsize);
|
|
if (pcjr->array[0] & 1) x = (pcjr->crtc[1] << 3) + 16;
|
|
else x = (pcjr->crtc[1] << 4) + 16;
|
|
pcjr->lastline++;
|
|
if (x != xsize || (pcjr->lastline - pcjr->firstline) != ysize)
|
|
{
|
|
xsize = x;
|
|
ysize = pcjr->lastline - pcjr->firstline;
|
|
// printf("Resize to %i,%i - R1 %i\n",xsize,ysize,crtc[1]);
|
|
if (xsize < 64) xsize = 656;
|
|
if (ysize < 32) ysize = 200;
|
|
updatewindowsize(xsize, (ysize << 1) + 16);
|
|
}
|
|
// printf("Blit %i %i\n",firstline,lastline);
|
|
//printf("Xsize is %i\n",xsize);
|
|
|
|
if (pcjr->composite)
|
|
video_blit_memtoscreen(0, pcjr->firstline-4, 0, (pcjr->lastline - pcjr->firstline) + 8, xsize, (pcjr->lastline - pcjr->firstline) + 8);
|
|
else
|
|
video_blit_memtoscreen_8(0, pcjr->firstline-4, xsize, (pcjr->lastline - pcjr->firstline) + 8);
|
|
|
|
frames++;
|
|
video_res_x = xsize - 16;
|
|
video_res_y = ysize;
|
|
}
|
|
pcjr->firstline = 1000;
|
|
pcjr->lastline = 0;
|
|
pcjr->blink++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
pcjr->sc++;
|
|
pcjr->sc &= 31;
|
|
pcjr->ma = pcjr->maback;
|
|
}
|
|
if ((pcjr->sc == (pcjr->crtc[10] & 31) || ((pcjr->crtc[8] & 3) == 3 && pcjr->sc == ((pcjr->crtc[10] & 31) >> 1))))
|
|
pcjr->con = 1;
|
|
}
|
|
}
|
|
|
|
static void *pcjr_video_init()
|
|
{
|
|
int display_type;
|
|
pcjr_t *pcjr = malloc(sizeof(pcjr_t));
|
|
memset(pcjr, 0, sizeof(pcjr_t));
|
|
|
|
display_type = model_get_config_int("display_type");
|
|
pcjr->composite = (display_type != PCJR_RGB);
|
|
|
|
pcjr->memctrl = -1;
|
|
|
|
timer_add(pcjr_poll, &pcjr->vidtime, TIMER_ALWAYS_ENABLED, pcjr);
|
|
mem_mapping_add(&pcjr->mapping, 0xb8000, 0x08000, pcjr_read, NULL, NULL, pcjr_write, NULL, NULL, NULL, 0, pcjr);
|
|
io_sethandler(0x03d0, 0x0010, pcjr_in, NULL, NULL, pcjr_out, NULL, NULL, pcjr);
|
|
return pcjr;
|
|
}
|
|
|
|
static void pcjr_video_close(void *p)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *)p;
|
|
|
|
free(pcjr);
|
|
}
|
|
|
|
static void pcjr_speed_changed(void *p)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *)p;
|
|
|
|
pcjr_recalctimings(pcjr);
|
|
}
|
|
|
|
device_t pcjr_video_device =
|
|
{
|
|
"IBM PCjr (video)",
|
|
0,
|
|
pcjr_video_init,
|
|
pcjr_video_close,
|
|
NULL,
|
|
pcjr_speed_changed,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
static device_config_t pcjr_config[] =
|
|
{
|
|
{
|
|
.name = "display_type",
|
|
.description = "Display type",
|
|
.type = CONFIG_SELECTION,
|
|
.selection =
|
|
{
|
|
{
|
|
.description = "RGB",
|
|
.value = PCJR_RGB
|
|
},
|
|
{
|
|
.description = "Composite",
|
|
.value = PCJR_COMPOSITE
|
|
},
|
|
{
|
|
.description = ""
|
|
}
|
|
},
|
|
.default_int = PCJR_RGB
|
|
},
|
|
{
|
|
.type = -1
|
|
}
|
|
};
|
|
|
|
/*This isn't really a device as such - more of a convenient way to hook in the
|
|
config information*/
|
|
device_t pcjr_device =
|
|
{
|
|
"IBM PCjr",
|
|
0,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
pcjr_config
|
|
};
|