2017-05-30 03:38:38 +02:00
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/*
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2023-01-06 15:36:05 -05:00
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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2017-05-30 03:38:38 +02:00
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*
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2023-01-06 15:36:05 -05:00
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* This file is part of the 86Box distribution.
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2017-05-30 03:38:38 +02:00
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*
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2023-01-06 15:36:05 -05:00
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* Emulation of the EGA and Chips & Technologies SuperEGA
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* graphics cards.
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2017-05-30 03:38:38 +02:00
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*
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2020-03-25 00:46:02 +02:00
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*
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2017-05-30 03:38:38 +02:00
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*
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2023-01-06 15:36:29 -05:00
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* Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
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2023-01-06 15:36:05 -05:00
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* Miran Grca, <mgrca8@gmail.com>
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2017-11-01 01:51:19 -05:00
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*
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2023-01-06 15:36:05 -05:00
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* Copyright 2008-2020 Sarah Walker.
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* Copyright 2016-2020 Miran Grca.
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2017-05-30 03:38:38 +02:00
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*/
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2022-02-18 19:42:21 -05:00
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2017-11-20 01:58:23 -05:00
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#ifndef VIDEO_EGA_H
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2022-07-27 17:00:34 -04:00
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#define VIDEO_EGA_H
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2017-05-30 03:38:38 +02:00
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2017-11-20 01:58:23 -05:00
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#if defined(EMU_MEM_H) && defined(EMU_ROM_H)
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typedef struct ega_t {
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mem_mapping_t mapping;
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rom_t bios_rom;
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2023-06-09 23:46:54 -04:00
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uint8_t crtcreg;
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uint8_t gdcaddr;
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uint8_t attraddr;
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uint8_t attrff;
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uint8_t attr_palette_enable;
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uint8_t seqaddr;
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uint8_t miscout;
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uint8_t writemask;
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uint8_t la;
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uint8_t lb;
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uint8_t lc;
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uint8_t ld;
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uint8_t stat;
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uint8_t colourcompare;
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uint8_t colournocare;
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uint8_t scrblank;
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uint8_t plane_mask;
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2023-08-12 01:16:49 +02:00
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uint8_t ctl_mode;
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2023-08-14 05:00:56 +02:00
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uint8_t color_mux;
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uint8_t dot;
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2017-11-20 01:58:23 -05:00
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uint8_t crtc[32];
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uint8_t gdcreg[16];
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uint8_t attrregs[32];
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uint8_t seqregs[64];
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Added the IBM 5161 ISA expansion for PC and XT;
Cleaned up the parallel port emulation, added IRQ support, and made enabling/disabling per port;
Added the Award 430NX and the Intel Classic/PCI (Alfredo, 420TX);
Finished the 586MC1;
Added 8087 emulation;
Moved Cyrix 6x86'es to the Dev branch;
Sanitized/cleaned up memregs.c/h and intel.c/h;
Split the chipsets from machines and sanitized Port 92 emulation;
Added support for the 15bpp mode to the Compaq ATI 28800;
Moved the MR 386DX and 486 machines to the Dev branch;
Ported the new dynamic recompiler from PCem, but it remains in Dev branch until after v2.00;
Ported the new timer code from PCem;
Cleaned up the CPU table of unused stuff and better optimized its structure;
Ported the Open-XT and Open-AT from VARCem, the Open-AT is in the Dev branch;
Ported the XT MFM controller rewrite and adding of more controllers (incl. two RLL ones), from VARCem;
Added the AHA-1540A and the BusTek BT-542B;
Moved the Sumo SCSI-AT to the Dev branch;
Minor IDE, FDC, and floppy drive code clean-ups;
Made NCR 5380/53C400-based cards' BIOS address configurable;
Got rid of the legacy romset variable;
Unified (video) buffer and buffer32 into one and make the unified buffer 32-bit;
Added the Amstead PPC512 per PCem patch by John Elliott;
Switched memory mapping granularity from 16k to 4k (less than 1k not possible due to internal pages);
Rewrote the CL-GD 54xx blitter, fixes Win-OS/2 on the 54x6 among other thing;
Added the Image Manager 1024 and Professional Graphics Controller per PCem patch by John Elliott and work done on VARCem;
Added Headland HT-216, GC-205 and Video 7 VGA 1024i emulation based on PCem commit;
Implemented the fuction keys for the Toshiba T1000/T1200/T3100 enhancement;
Amstrad MegaPC does now works correctly with non-internal graphics card;
The SLiRP code no longer casts a packed struct type to a non-packed struct type;
The Xi8088 and PB410a no longer hang on 86Box when PS/2 mouse is not present;
The S3 Virge on BeOS is no longer broken (was broken by build #1591);
OS/2 2.0 build 6.167 now sees key presses again;
Xi8088 now work on CGA again;
86F images converted from either the old or new variants of the HxC MFM format now work correctly;
Hardware interrupts with a vector of 0xFF are now handled correctly;
OPTi 495SX boards no longer incorrectly have 64 MB maximum RAM when 32 MB is correct;
Fixed VNC keyboard input bugs;
Fixed AT RTC periodic interrupt - Chicago 58s / 73f / 73g / 81 MIDI play no longer hangs with the build's own VTD driver;
Fixed mouse polling with internal mice - Amstrad and Olivetti mice now work correctly;
Triones ATAPI DMA driver now correctly reads a file at the end of a CD image with a sectors number not divisible by 4;
Compaq Portable now works with all graphics cards;
Fixed various MDSI Genius bugs;
Added segment limit checks and improved page fault checks for several CPU instructions - Memphis 15xx WINSETUP and Chicago 58s WINDISK.CPL no longer issue a GPF, and some S3 drivers that used to have glitches, now work correctly;
Further improved the 808x emulation, also fixes the noticably choppy sound when using 808x CPU's, also fixes #355;
OS/2 installer no logner locks up on splash screen on PS/2 Model 70 and 80, fixes #400.
Fixed several Amstead bugs, GEM no longer crashes on the Amstrad 1640, fixes #391.
Ported John Elliott's Amstrad fixes and improvement from PCem, and fixed the default language so it's correctly Engliish, fixes #278, fixes #389.
Fixed a minor IDE timing bug, fixes #388.
Fixed Toshiba T1000 RAM issues, fixes #379.
Fixed EGA/(S)VGA overscan border handling, fixes #378;
Got rid of the now long useless IDE channel 2 auto-removal, fixes #370;
Fixed the BIOS files used by the AMSTRAD PC1512, fixes #366;
Ported the Unicode CD image file name fix from VARCem, fixes #365;
Fixed high density floppy disks on the Xi8088, fixes #359;
Fixed some bugs in the Hercules emulation, fixes #346, fixes #358;
Fixed the SCSI hard disk mode sense pages, fixes #356;
Removed the AMI Unknown 386SX because of impossibility to identify the chipset, closes #349;
Fixed bugs in the serial mouse emulation, fixes #344;
Compiled 86Box binaries now include all the required .DLL's, fixes #341;
Made some combo boxes in the Settings dialog slightly wider, fixes #276.
2019-09-20 14:02:30 +02:00
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uint8_t egapal[16];
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2020-01-20 05:36:44 +01:00
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uint8_t regs[256];
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2017-11-20 01:58:23 -05:00
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Added the IBM 5161 ISA expansion for PC and XT;
Cleaned up the parallel port emulation, added IRQ support, and made enabling/disabling per port;
Added the Award 430NX and the Intel Classic/PCI (Alfredo, 420TX);
Finished the 586MC1;
Added 8087 emulation;
Moved Cyrix 6x86'es to the Dev branch;
Sanitized/cleaned up memregs.c/h and intel.c/h;
Split the chipsets from machines and sanitized Port 92 emulation;
Added support for the 15bpp mode to the Compaq ATI 28800;
Moved the MR 386DX and 486 machines to the Dev branch;
Ported the new dynamic recompiler from PCem, but it remains in Dev branch until after v2.00;
Ported the new timer code from PCem;
Cleaned up the CPU table of unused stuff and better optimized its structure;
Ported the Open-XT and Open-AT from VARCem, the Open-AT is in the Dev branch;
Ported the XT MFM controller rewrite and adding of more controllers (incl. two RLL ones), from VARCem;
Added the AHA-1540A and the BusTek BT-542B;
Moved the Sumo SCSI-AT to the Dev branch;
Minor IDE, FDC, and floppy drive code clean-ups;
Made NCR 5380/53C400-based cards' BIOS address configurable;
Got rid of the legacy romset variable;
Unified (video) buffer and buffer32 into one and make the unified buffer 32-bit;
Added the Amstead PPC512 per PCem patch by John Elliott;
Switched memory mapping granularity from 16k to 4k (less than 1k not possible due to internal pages);
Rewrote the CL-GD 54xx blitter, fixes Win-OS/2 on the 54x6 among other thing;
Added the Image Manager 1024 and Professional Graphics Controller per PCem patch by John Elliott and work done on VARCem;
Added Headland HT-216, GC-205 and Video 7 VGA 1024i emulation based on PCem commit;
Implemented the fuction keys for the Toshiba T1000/T1200/T3100 enhancement;
Amstrad MegaPC does now works correctly with non-internal graphics card;
The SLiRP code no longer casts a packed struct type to a non-packed struct type;
The Xi8088 and PB410a no longer hang on 86Box when PS/2 mouse is not present;
The S3 Virge on BeOS is no longer broken (was broken by build #1591);
OS/2 2.0 build 6.167 now sees key presses again;
Xi8088 now work on CGA again;
86F images converted from either the old or new variants of the HxC MFM format now work correctly;
Hardware interrupts with a vector of 0xFF are now handled correctly;
OPTi 495SX boards no longer incorrectly have 64 MB maximum RAM when 32 MB is correct;
Fixed VNC keyboard input bugs;
Fixed AT RTC periodic interrupt - Chicago 58s / 73f / 73g / 81 MIDI play no longer hangs with the build's own VTD driver;
Fixed mouse polling with internal mice - Amstrad and Olivetti mice now work correctly;
Triones ATAPI DMA driver now correctly reads a file at the end of a CD image with a sectors number not divisible by 4;
Compaq Portable now works with all graphics cards;
Fixed various MDSI Genius bugs;
Added segment limit checks and improved page fault checks for several CPU instructions - Memphis 15xx WINSETUP and Chicago 58s WINDISK.CPL no longer issue a GPF, and some S3 drivers that used to have glitches, now work correctly;
Further improved the 808x emulation, also fixes the noticably choppy sound when using 808x CPU's, also fixes #355;
OS/2 installer no logner locks up on splash screen on PS/2 Model 70 and 80, fixes #400.
Fixed several Amstead bugs, GEM no longer crashes on the Amstrad 1640, fixes #391.
Ported John Elliott's Amstrad fixes and improvement from PCem, and fixed the default language so it's correctly Engliish, fixes #278, fixes #389.
Fixed a minor IDE timing bug, fixes #388.
Fixed Toshiba T1000 RAM issues, fixes #379.
Fixed EGA/(S)VGA overscan border handling, fixes #378;
Got rid of the now long useless IDE channel 2 auto-removal, fixes #370;
Fixed the BIOS files used by the AMSTRAD PC1512, fixes #366;
Ported the Unicode CD image file name fix from VARCem, fixes #365;
Fixed high density floppy disks on the Xi8088, fixes #359;
Fixed some bugs in the Hercules emulation, fixes #346, fixes #358;
Fixed the SCSI hard disk mode sense pages, fixes #356;
Removed the AMI Unknown 386SX because of impossibility to identify the chipset, closes #349;
Fixed bugs in the serial mouse emulation, fixes #344;
Compiled 86Box binaries now include all the required .DLL's, fixes #341;
Made some combo boxes in the Settings dialog slightly wider, fixes #276.
2019-09-20 14:02:30 +02:00
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uint8_t *vram;
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2017-11-20 01:58:23 -05:00
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2024-01-24 20:45:44 +01:00
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uint16_t light_pen;
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2023-06-09 23:46:54 -04:00
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int vidclock;
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int fast;
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int extvram;
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int vres;
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int readmode;
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int writemode;
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int readplane;
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int vrammask;
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int chain4;
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int chain2_read;
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int chain2_write;
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int con;
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int oddeven_page;
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int oddeven_chain;
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int vc;
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int sc;
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int dispon;
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int hdisp_on;
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int cursoron;
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int blink;
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int fullchange;
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int linepos;
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int vslines;
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int linecountff;
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int oddeven;
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int lowres;
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int interlace;
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int linedbl;
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int lindebl;
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int rowcount;
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int vtotal;
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int dispend;
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int vsyncstart;
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int split;
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int hdisp;
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int hdisp_old;
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int htotal;
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int hdisp_time;
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int rowoffset;
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int vblankstart;
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int scrollcache;
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int firstline;
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int lastline;
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int firstline_draw;
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int lastline_draw;
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int x_add;
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int y_add;
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int displine;
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int res_x;
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int res_y;
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int bpp;
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int index;
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2023-08-14 05:00:56 +02:00
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int remap_required;
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2023-12-19 19:03:54 +01:00
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int actual_type;
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int chipset;
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2023-06-09 23:46:54 -04:00
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uint32_t charseta;
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uint32_t charsetb;
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uint32_t ma_latch;
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uint32_t ma;
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uint32_t maback;
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uint32_t ca;
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uint32_t vram_limit;
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uint32_t overscan_color;
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2023-08-14 05:00:56 +02:00
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uint32_t cca;
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2017-11-20 01:58:23 -05:00
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uint32_t *pallook;
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2023-06-09 23:46:54 -04:00
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uint64_t dispontime;
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uint64_t dispofftime;
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2016-06-26 00:34:39 +02:00
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2023-08-14 05:00:56 +02:00
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uint64_t dot_time;
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2017-05-30 03:38:38 +02:00
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2023-08-14 05:00:56 +02:00
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pc_timer_t timer;
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pc_timer_t dot_timer;
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double dot_clock;
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2022-06-12 20:03:34 +02:00
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2023-12-19 19:03:54 +01:00
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void * eeprom;
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2023-08-14 05:00:56 +02:00
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uint32_t (*remap_func)(struct ega_t *ega, uint32_t in_addr);
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void (*render)(struct ega_t *svga);
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2016-06-26 00:34:39 +02:00
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} ega_t;
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2017-11-20 01:58:23 -05:00
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#endif
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2016-06-26 00:34:39 +02:00
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2017-11-20 01:58:23 -05:00
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#ifdef EMU_DEVICE_H
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2018-03-19 01:02:04 +01:00
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extern const device_t ega_device;
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extern const device_t cpqega_device;
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extern const device_t sega_device;
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2023-12-19 19:03:54 +01:00
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extern const device_t atiega800p_device;
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2020-09-22 10:03:23 +03:00
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extern const device_t iskra_ega_device;
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2021-02-18 21:57:19 +01:00
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extern const device_t et2000_device;
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2017-11-20 01:58:23 -05:00
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#endif
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extern int update_overscan;
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2022-07-27 17:00:34 -04:00
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#define DISPLAY_RGB 0
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#define DISPLAY_COMPOSITE 1
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2018-01-24 23:33:08 +01:00
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#define DISPLAY_RGB_NO_BROWN 2
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2022-07-27 17:00:34 -04:00
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#define DISPLAY_GREEN 3
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#define DISPLAY_AMBER 4
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#define DISPLAY_WHITE 5
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2017-11-20 01:58:23 -05:00
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#if defined(EMU_MEM_H) && defined(EMU_ROM_H)
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2022-07-27 17:00:34 -04:00
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extern void ega_init(ega_t *ega, int monitor_type, int is_mono);
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extern void ega_recalctimings(struct ega_t *ega);
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2022-06-12 20:03:34 +02:00
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extern void ega_recalc_remap_func(struct ega_t *ega);
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2017-11-20 01:58:23 -05:00
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#endif
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2023-06-09 23:46:54 -04:00
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extern void ega_out(uint16_t addr, uint8_t val, void *priv);
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extern uint8_t ega_in(uint16_t addr, void *priv);
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extern void ega_poll(void *priv);
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extern void ega_write(uint32_t addr, uint8_t val, void *priv);
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extern uint8_t ega_read(uint32_t addr, void *priv);
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2017-11-20 01:58:23 -05:00
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2023-06-09 23:46:54 -04:00
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extern int firstline_draw;
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extern int lastline_draw;
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2020-02-29 19:12:23 +01:00
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extern int displine;
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extern int sc;
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2023-06-09 23:46:54 -04:00
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extern uint32_t ma;
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extern uint32_t ca;
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extern int con;
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extern int cursoron;
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extern int cgablink;
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2020-02-29 19:12:23 +01:00
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extern int scrollcache;
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extern uint8_t edatlookup[4][4];
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2023-03-23 15:28:25 +13:00
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extern uint8_t egaremap2bpp[256];
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2020-02-29 19:12:23 +01:00
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#if defined(EMU_MEM_H) && defined(EMU_ROM_H)
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void ega_render_blank(ega_t *ega);
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void ega_render_overscan_left(ega_t *ega);
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void ega_render_overscan_right(ega_t *ega);
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2023-03-23 17:06:12 +13:00
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void ega_render_text(ega_t *ega);
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2023-03-23 15:28:25 +13:00
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void ega_render_graphics(ega_t *ega);
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2020-02-29 19:12:23 +01:00
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#endif
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2022-07-27 17:00:34 -04:00
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#endif /*VIDEO_EGA_H*/
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