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86Box/src/video/vid_paradise.c
waltje 7c67e867c8 Major commit, cleaning a lot of old stuff. 
IBM.H is gone, video stuff re-organized. Keyboard stuff reorganized.
Machines that have their own video, mouse and/or keyboard now have all this in their machine file.
Fixed and other cleanups here and there.
2017-11-05 02:00:50 -05:00

455 lines
15 KiB
C
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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Paradise VGA emulation
* PC2086, PC3086 use PVGA1A
* MegaPC uses W90C11A
*
* Version: @(#)vid_paradise.c 1.0.2 2017/11/04
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2008-2017 Sarah Walker.
* Copyright 2016,2017 Miran Grca.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include "../86box.h"
#include "../io.h"
#include "../mem.h"
#include "../rom.h"
#include "../device.h"
#include "video.h"
#include "vid_paradise.h"
#include "vid_svga.h"
#include "vid_svga_render.h"
typedef struct paradise_t
{
svga_t svga;
rom_t bios_rom;
enum
{
PVGA1A = 0,
WD90C11
} type;
uint32_t read_bank[4], write_bank[4];
} paradise_t;
void paradise_write(uint32_t addr, uint8_t val, void *p);
uint8_t paradise_read(uint32_t addr, void *p);
void paradise_remap(paradise_t *paradise);
void paradise_out(uint16_t addr, uint8_t val, void *p)
{
paradise_t *paradise = (paradise_t *)p;
svga_t *svga = &paradise->svga;
uint8_t old;
if (((addr & 0xfff0) == 0x3d0 || (addr & 0xfff0) == 0x3b0) && !(svga->miscout & 1))
addr ^= 0x60;
switch (addr)
{
case 0x3c5:
if (svga->seqaddr > 7)
{
if (paradise->type < WD90C11 || svga->seqregs[6] != 0x48)
return;
svga->seqregs[svga->seqaddr & 0x1f] = val;
if (svga->seqaddr == 0x11)
paradise_remap(paradise);
return;
}
break;
case 0x3cf:
if (svga->gdcaddr >= 0x9 && svga->gdcaddr < 0xf)
{
if ((svga->gdcreg[0xf] & 7) != 5)
return;
}
if (svga->gdcaddr == 6)
{
if ((svga->gdcreg[6] & 0xc) != (val & 0xc))
{
switch (val&0xC)
{
case 0x0: /*128k at A0000*/
mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x20000);
svga->banked_mask = 0xffff;
break;
case 0x4: /*64k at A0000*/
mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x10000);
svga->banked_mask = 0xffff;
break;
case 0x8: /*32k at B0000*/
mem_mapping_set_addr(&svga->mapping, 0xb0000, 0x08000);
svga->banked_mask = 0x7fff;
break;
case 0xC: /*32k at B8000*/
mem_mapping_set_addr(&svga->mapping, 0xb8000, 0x08000);
svga->banked_mask = 0x7fff;
break;
}
}
svga->gdcreg[6] = val;
paradise_remap(paradise);
return;
}
if (svga->gdcaddr == 0x9 || svga->gdcaddr == 0xa)
{
svga->gdcreg[svga->gdcaddr] = val;
paradise_remap(paradise);
return;
}
if (svga->gdcaddr == 0xe)
{
svga->gdcreg[0xe] = val;
paradise_remap(paradise);
return;
}
break;
case 0x3D4:
if (paradise->type == PVGA1A)
svga->crtcreg = val & 0x1f;
else
svga->crtcreg = val & 0x3f;
return;
case 0x3D5:
if (svga->crtcreg <= 0x18)
val &= mask_crtc[svga->crtcreg];
if ((svga->crtcreg < 7) && (svga->crtc[0x11] & 0x80))
return;
if ((svga->crtcreg == 7) && (svga->crtc[0x11] & 0x80))
val = (svga->crtc[7] & ~0x10) | (val & 0x10);
if (svga->crtcreg > 0x29 && (svga->crtc[0x29] & 7) != 5)
return;
if (svga->crtcreg >= 0x31 && svga->crtcreg <= 0x37)
return;
old = svga->crtc[svga->crtcreg];
svga->crtc[svga->crtcreg] = val;
if (old != val)
{
if (svga->crtcreg < 0xe || svga->crtcreg > 0x10)
{
svga->fullchange = changeframecount;
svga_recalctimings(&paradise->svga);
}
}
break;
}
svga_out(addr, val, svga);
}
uint8_t paradise_in(uint16_t addr, void *p)
{
paradise_t *paradise = (paradise_t *)p;
svga_t *svga = &paradise->svga;
if (((addr & 0xfff0) == 0x3d0 || (addr & 0xfff0) == 0x3b0) && !(svga->miscout & 1))
addr ^= 0x60;
switch (addr)
{
case 0x3c2:
return 0x10;
case 0x3c5:
if (svga->seqaddr > 7)
{
if (paradise->type < WD90C11 || svga->seqregs[6] != 0x48)
return 0xff;
if (svga->seqaddr > 0x12)
return 0xff;
return svga->seqregs[svga->seqaddr & 0x1f];
}
break;
case 0x3cf:
if (svga->gdcaddr >= 0x9 && svga->gdcaddr < 0xf)
{
if (svga->gdcreg[0xf] & 0x10)
return 0xff;
switch (svga->gdcaddr)
{
case 0xf:
return (svga->gdcreg[0xf] & 0x17) | 0x80;
}
}
break;
case 0x3D4:
return svga->crtcreg;
case 0x3D5:
if (svga->crtcreg > 0x29 && svga->crtcreg < 0x30 && (svga->crtc[0x29] & 0x88) != 0x80)
return 0xff;
return svga->crtc[svga->crtcreg];
}
return svga_in(addr, svga);
}
void paradise_remap(paradise_t *paradise)
{
svga_t *svga = &paradise->svga;
if (svga->seqregs[0x11] & 0x80)
{
paradise->read_bank[0] = paradise->read_bank[2] = (svga->gdcreg[0x9] & 0x7f) << 12;
paradise->read_bank[1] = paradise->read_bank[3] = ((svga->gdcreg[0x9] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
paradise->write_bank[0] = paradise->write_bank[2] = (svga->gdcreg[0xa] & 0x7f) << 12;
paradise->write_bank[1] = paradise->write_bank[3] = ((svga->gdcreg[0xa] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
}
else if (svga->gdcreg[0xe] & 0x08)
{
if (svga->gdcreg[0x6] & 0xc)
{
paradise->read_bank[0] = paradise->read_bank[2] = (svga->gdcreg[0xa] & 0x7f) << 12;
paradise->write_bank[0] = paradise->write_bank[2] = (svga->gdcreg[0xa] & 0x7f) << 12;
paradise->read_bank[1] = paradise->read_bank[3] = ((svga->gdcreg[0x9] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
paradise->write_bank[1] = paradise->write_bank[3] = ((svga->gdcreg[0x9] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
}
else
{
paradise->read_bank[0] = paradise->write_bank[0] = (svga->gdcreg[0xa] & 0x7f) << 12;
paradise->read_bank[1] = paradise->write_bank[1] = ((svga->gdcreg[0xa] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
paradise->read_bank[2] = paradise->write_bank[2] = (svga->gdcreg[0x9] & 0x7f) << 12;
paradise->read_bank[3] = paradise->write_bank[3] = ((svga->gdcreg[0x9] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
}
}
else
{
paradise->read_bank[0] = paradise->read_bank[2] = (svga->gdcreg[0x9] & 0x7f) << 12;
paradise->read_bank[1] = paradise->read_bank[3] = ((svga->gdcreg[0x9] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
paradise->write_bank[0] = paradise->write_bank[2] = (svga->gdcreg[0x9] & 0x7f) << 12;
paradise->write_bank[1] = paradise->write_bank[3] = ((svga->gdcreg[0x9] & 0x7f) << 12) + ((svga->gdcreg[6] & 0x08) ? 0 : 0x8000);
}
}
void paradise_recalctimings(svga_t *svga)
{
svga->lowres = !(svga->gdcreg[0xe] & 0x01);
if (svga->bpp == 8 && !svga->lowres)
svga->render = svga_render_8bpp_highres;
}
void paradise_write(uint32_t addr, uint8_t val, void *p)
{
paradise_t *paradise = (paradise_t *)p;
addr = (addr & 0x7fff) + paradise->write_bank[(addr >> 15) & 3];
svga_write_linear(addr, val, &paradise->svga);
}
uint8_t paradise_read(uint32_t addr, void *p)
{
paradise_t *paradise = (paradise_t *)p;
addr = (addr & 0x7fff) + paradise->read_bank[(addr >> 15) & 3];
return svga_read_linear(addr, &paradise->svga);
}
void *paradise_pvga1a_init(device_t *info)
{
paradise_t *paradise = malloc(sizeof(paradise_t));
svga_t *svga = &paradise->svga;
memset(paradise, 0, sizeof(paradise_t));
io_sethandler(0x03c0, 0x0020, paradise_in, NULL, NULL, paradise_out, NULL, NULL, paradise);
svga_init(&paradise->svga, paradise, 1 << 18, /*256kb*/
NULL,
paradise_in, paradise_out,
NULL,
NULL);
mem_mapping_set_handler(&paradise->svga.mapping, paradise_read, NULL, NULL, paradise_write, NULL, NULL);
mem_mapping_set_p(&paradise->svga.mapping, paradise);
svga->crtc[0x31] = 'W';
svga->crtc[0x32] = 'D';
svga->crtc[0x33] = '9';
svga->crtc[0x34] = '0';
svga->crtc[0x35] = 'C';
svga->bpp = 8;
svga->miscout = 1;
svga->linear_base = 0;
paradise->type = PVGA1A;
return paradise;
}
void *paradise_wd90c11_init(device_t *info)
{
paradise_t *paradise = malloc(sizeof(paradise_t));
svga_t *svga = &paradise->svga;
memset(paradise, 0, sizeof(paradise_t));
io_sethandler(0x03c0, 0x0020, paradise_in, NULL, NULL, paradise_out, NULL, NULL, paradise);
svga_init(&paradise->svga, paradise, 1 << 19, /*512kb*/
paradise_recalctimings,
paradise_in, paradise_out,
NULL,
NULL);
mem_mapping_set_handler(&paradise->svga.mapping, paradise_read, NULL, NULL, paradise_write, NULL, NULL);
mem_mapping_set_p(&paradise->svga.mapping, paradise);
svga->crtc[0x31] = 'W';
svga->crtc[0x32] = 'D';
svga->crtc[0x33] = '9';
svga->crtc[0x34] = '0';
svga->crtc[0x35] = 'C';
svga->crtc[0x36] = '1';
svga->crtc[0x37] = '1';
svga->bpp = 8;
svga->miscout = 1;
svga->linear_base = 0;
paradise->type = WD90C11;
return paradise;
}
static void *paradise_pvga1a_pc2086_init(device_t *info)
{
paradise_t *paradise = paradise_pvga1a_init(info);
if (paradise)
rom_init(&paradise->bios_rom, L"roms/machines/pc2086/40186.ic171", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
return paradise;
}
static void *paradise_pvga1a_pc3086_init(device_t *info)
{
paradise_t *paradise = paradise_pvga1a_init(info);
if (paradise)
rom_init(&paradise->bios_rom, L"roms/machines/pc3086/c000.bin", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
return paradise;
}
static void *paradise_wd90c11_megapc_init(device_t *info)
{
paradise_t *paradise = paradise_wd90c11_init(info);
if (paradise)
rom_init_interleaved(&paradise->bios_rom,
L"roms/machines/megapc/41651-bios lo.u18",
L"roms/machines/megapc/211253-bios hi.u19",
0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
return paradise;
}
static int paradise_wd90c11_standalone_available(void)
{
return rom_present(L"roms/machines/megapc/41651-bios lo.u18") && rom_present(L"roms/machines/megapc/211253-bios hi.u19");
}
void paradise_close(void *p)
{
paradise_t *paradise = (paradise_t *)p;
svga_close(&paradise->svga);
free(paradise);
}
void paradise_speed_changed(void *p)
{
paradise_t *paradise = (paradise_t *)p;
svga_recalctimings(&paradise->svga);
}
void paradise_force_redraw(void *p)
{
paradise_t *paradise = (paradise_t *)p;
paradise->svga.fullchange = changeframecount;
}
void paradise_add_status_info(char *s, int max_len, void *p)
{
paradise_t *paradise = (paradise_t *)p;
svga_add_status_info(s, max_len, &paradise->svga);
}
device_t paradise_pvga1a_pc2086_device =
{
"Paradise PVGA1A (Amstrad PC2086)",
0,
0,
paradise_pvga1a_pc2086_init,
paradise_close,
NULL,
NULL,
paradise_speed_changed,
paradise_force_redraw,
paradise_add_status_info
};
device_t paradise_pvga1a_pc3086_device =
{
"Paradise PVGA1A (Amstrad PC3086)",
0,
0,
paradise_pvga1a_pc3086_init,
paradise_close,
NULL,
NULL,
paradise_speed_changed,
paradise_force_redraw,
paradise_add_status_info
};
device_t paradise_wd90c11_megapc_device =
{
"Paradise WD90C11 (Amstrad MegaPC)",
0,
0,
paradise_wd90c11_megapc_init,
paradise_close,
NULL,
NULL,
paradise_speed_changed,
paradise_force_redraw,
paradise_add_status_info
};
device_t paradise_wd90c11_device =
{
"Paradise WD90C11",
DEVICE_ISA,
0,
paradise_wd90c11_megapc_init,
paradise_close,
NULL,
paradise_wd90c11_standalone_available,
paradise_speed_changed,
paradise_force_redraw,
paradise_add_status_info
};
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