Port Tseng Labs ET3000AX (ISA) from M&K
This commit is contained in:
Jasmine Iwanek
@@ -1,16 +1,16 @@
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#
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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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# 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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#
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# This file is part of the 86Box distribution.
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# This file is part of the 86Box distribution.
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#
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# CMake build script.
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# CMake build script.
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#
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# Authors: David Hrdlička, <hrdlickadavid@outlook.com>
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# Authors: David Hrdlička, <hrdlickadavid@outlook.com>
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#
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# Copyright 2020,2021 David Hrdlička.
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# Copyright 2020,2021 David Hrdlička.
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#
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add_library(vid OBJECT agpgart.c video.c vid_table.c vid_cga.c vid_cga_comp.c
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@@ -20,12 +20,12 @@ add_library(vid OBJECT agpgart.c video.c vid_table.c vid_cga.c vid_cga_comp.c
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vid_svga_render.c vid_ddc.c vid_vga.c vid_ati_eeprom.c vid_ati18800.c
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vid_ati28800.c vid_ati_mach64.c vid_ati68860_ramdac.c vid_bt48x_ramdac.c
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vid_av9194.c vid_icd2061.c vid_ics2494.c vid_ics2595.c vid_cl54xx.c
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vid_et4000.c vid_sc1148x_ramdac.c vid_sc1502x_ramdac.c vid_et4000w32.c
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vid_stg_ramdac.c vid_ht216.c vid_oak_oti.c vid_paradise.c vid_rtg310x.c
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vid_f82c425.c vid_ti_cf62011.c vid_tvga.c vid_tgui9440.c vid_tkd8001_ramdac.c
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vid_att20c49x_ramdac.c vid_s3.c vid_s3_virge.c vid_ibm_rgb528_ramdac.c
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vid_sdac_ramdac.c vid_ogc.c vid_nga.c vid_tvp3026_ramdac.c vid_att2xc498_ramdac.c
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vid_xga.c)
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vid_et3000.c vid_et4000.c vid_sc1148x_ramdac.c vid_sc1502x_ramdac.c
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vid_et4000w32.c vid_stg_ramdac.c vid_ht216.c vid_oak_oti.c vid_paradise.c
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vid_rtg310x.c vid_f82c425.c vid_ti_cf62011.c vid_tvga.c vid_tgui9440.c
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vid_tkd8001_ramdac.c vid_att20c49x_ramdac.c vid_s3.c vid_s3_virge.c
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vid_ibm_rgb528_ramdac.c vid_sdac_ramdac.c vid_ogc.c vid_nga.c
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vid_tvp3026_ramdac.c vid_att2xc498_ramdac.c vid_xga.c)
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if(MGA)
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target_compile_definitions(vid PRIVATE USE_MGA)
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299
src/video/vid_et3000.c
Normal file
299
src/video/vid_et3000.c
Normal file
@@ -0,0 +1,299 @@
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/*
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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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*
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* This file is part of the 86Box distribution.
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*
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* Emulation of the Tseng Labs ET3000.
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*
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* Authors: Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2016-2018 Miran Grca.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <86box/86box.h>
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#include <86box/io.h>
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#include <86box/mca.h>
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#include <86box/mem.h>
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#include <86box/rom.h>
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#include <86box/device.h>
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#include <86box/timer.h>
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#include <86box/video.h>
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#include <86box/vid_svga.h>
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#include <86box/vid_svga_render.h>
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#define BIOS_ROM_PATH "roms/video/et3000/Tseng ET3000AX ISA VGA-VGA ULTRA.bin"
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typedef struct {
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const char *name;
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int type;
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svga_t svga;
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rom_t bios_rom;
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uint8_t banking;
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} et3000_t;
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static video_timings_t timing_et3000_isa = { VIDEO_ISA, 3, 3, 6, 5, 5, 10 };
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static uint8_t et3000_in(uint16_t addr, void *priv);
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static void et3000_out(uint16_t addr, uint8_t val, void *priv);
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static uint8_t
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et3000_in(uint16_t addr, void *priv)
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{
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et3000_t *dev = (et3000_t *) priv;
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svga_t *svga = &dev->svga;
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if (((addr & 0xfff0) == 0x3d0 || (addr & 0xfff0) == 0x3b0) && !(svga->miscout & 1))
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addr ^= 0x60;
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switch (addr) {
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case 0x3cd: /*Banking*/
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return dev->banking;
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case 0x3d4:
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return svga->crtcreg;
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case 0x3d5:
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return svga->crtc[svga->crtcreg];
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}
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return svga_in(addr, svga);
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}
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static void
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et3000_out(uint16_t addr, uint8_t val, void *priv)
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{
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et3000_t *dev = (et3000_t *) priv;
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svga_t *svga = &dev->svga;
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uint8_t old;
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if (((addr & 0xfff0) == 0x3d0 || (addr & 0xfff0) == 0x3b0) && !(svga->miscout & 1))
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addr ^= 0x60;
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switch (addr) {
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case 0x3c0:
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case 0x3c1:
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if (svga->attrff && (svga->attraddr == 0x16)) {
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svga->attrregs[0x16] = val;
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svga->chain4 &= ~0x10;
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if (svga->gdcreg[5] & 0x40)
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svga->chain4 |= (svga->attrregs[0x16] & 0x10);
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svga_recalctimings(svga);
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}
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break;
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case 0x3c5:
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if (svga->seqaddr == 4) {
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svga->seqregs[4] = val;
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svga->chain2_write = !(val & 4);
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svga->chain4 = (svga->chain4 & ~8) | (val & 8);
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svga->fast = (svga->gdcreg[8] == 0xff && !(svga->gdcreg[3] & 0x18) && !svga->gdcreg[1]) && svga->chain4 && !(svga->adv_flags & FLAG_ADDR_BY8);
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return;
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}
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break;
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case 0x3cf:
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if ((svga->gdcaddr & 15) == 5) {
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svga->chain4 &= ~0x10;
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if (val & 0x40)
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svga->chain4 |= (svga->attrregs[0x16] & 0x10);
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}
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break;
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case 0x3cd: /*Banking*/
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dev->banking = val;
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if (!(svga->crtc[0x23] & 0x80) && !(svga->gdcreg[6] & 0x08)) {
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switch ((val >> 6) & 3) {
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case 0: /*128K segments*/
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svga->write_bank = (val & 7) << 17;
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svga->read_bank = ((val >> 3) & 7) << 17;
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break;
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case 1: /*64K segments*/
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svga->write_bank = (val & 7) << 16;
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svga->read_bank = ((val >> 3) & 7) << 16;
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break;
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}
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}
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return;
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case 0x3d4:
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svga->crtcreg = val & 0x3f;
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return;
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case 0x3d5:
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if ((svga->crtcreg < 7) && (svga->crtc[0x11] & 0x80))
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return;
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if ((svga->crtcreg == 7) && (svga->crtc[0x11] & 0x80))
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val = (svga->crtc[7] & ~0x10) | (val & 0x10);
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old = svga->crtc[svga->crtcreg];
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svga->crtc[svga->crtcreg] = val;
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if (old != val) {
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if (svga->crtcreg < 0x0e || svga->crtcreg > 0x10) {
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svga->fullchange = changeframecount;
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svga_recalctimings(svga);
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}
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}
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break;
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}
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svga_out(addr, val, svga);
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}
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static void
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et3000_recalctimings(svga_t *svga)
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{
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svga->ma_latch |= (svga->crtc[0x23] & 2) << 15;
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if (svga->crtc[0x25] & 1)
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svga->vblankstart |= 0x400;
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if (svga->crtc[0x25] & 2)
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svga->vtotal |= 0x400;
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if (svga->crtc[0x25] & 4)
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svga->dispend |= 0x400;
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if (svga->crtc[0x25] & 8)
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svga->vsyncstart |= 0x400;
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if (svga->crtc[0x25] & 0x10)
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svga->split |= 0x400;
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svga->interlace = !!(svga->crtc[0x25] & 0x80);
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if (svga->attrregs[0x16] & 0x10) {
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svga->ma_latch <<= (1 << 0);
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svga->rowoffset <<= (1 << 0);
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switch (svga->gdcreg[5] & 0x60) {
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case 0x00:
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svga->render = svga_render_4bpp_highres;
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svga->hdisp *= 2;
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break;
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case 0x20:
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svga->render = svga_render_2bpp_highres;
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break;
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case 0x40:
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case 0x60:
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svga->render = svga_render_8bpp_highres;
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break;
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}
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}
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/* pclog("HDISP = %i, HTOTAL = %i, ROWOFFSET = %i, INTERLACE = %i\n",
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svga->hdisp, svga->htotal, svga->rowoffset, svga->interlace); */
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switch (((svga->miscout >> 2) & 3) | ((svga->crtc[0x24] << 1) & 4)) {
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case 0:
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case 1:
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break;
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case 3:
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svga->clock = (cpuclock * (double) (1ull << 32)) / 40000000.0;
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break;
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case 5:
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svga->clock = (cpuclock * (double) (1ull << 32)) / 65000000.0;
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break;
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default:
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svga->clock = (cpuclock * (double) (1ull << 32)) / 36000000.0;
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break;
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}
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}
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static void *
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et3000_init(const device_t *info)
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{
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const char *fn;
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et3000_t *dev;
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dev = (et3000_t *) malloc(sizeof(et3000_t));
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memset(dev, 0x00, sizeof(et3000_t));
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dev->name = info->name;
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dev->type = info->local;
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fn = BIOS_ROM_PATH;
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switch (dev->type) {
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case 0: /* ISA ET3000AX */
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video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_et3000_isa);
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svga_init(info, &dev->svga, dev, device_get_config_int("memory") << 10,
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et3000_recalctimings, et3000_in, et3000_out,
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NULL, NULL);
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io_sethandler(0x03c0, 32,
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et3000_in, NULL, NULL, et3000_out, NULL, NULL, dev);
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break;
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}
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rom_init(&dev->bios_rom, (char *) fn,
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0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
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dev->svga.bpp = 8;
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dev->svga.miscout = 1;
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return (dev);
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}
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static void
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et3000_close(void *priv)
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{
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et3000_t *dev = (et3000_t *) priv;
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svga_close(&dev->svga);
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free(dev);
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}
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static void
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et3000_speed_changed(void *priv)
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{
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et3000_t *dev = (et3000_t *) priv;
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svga_recalctimings(&dev->svga);
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}
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static void
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et3000_force_redraw(void *priv)
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{
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et3000_t *dev = (et3000_t *) priv;
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dev->svga.fullchange = changeframecount;
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}
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static int
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et3000_available(void)
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{
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return rom_present(BIOS_ROM_PATH);
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}
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static const device_config_t et3000_config[] = {
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{ .name = "memory",
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.description = "Memory size",
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.type = CONFIG_SELECTION,
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.default_int = 512,
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.selection = {
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{ .description = "256 KB",
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.value = 256 },
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{ .description = "512 KB",
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.value = 512 },
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{ .description = "1 MB",
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.value = 1024 },
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{ .description = "" } } },
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{ .type = CONFIG_END }
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};
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const device_t et3000_isa_device = {
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.name = "Tseng Labs ET3000AX (ISA)",
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.internal_name = "et3000ax",
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.flags = DEVICE_ISA,
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.local = 0,
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.init = et3000_init,
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.close = et3000_close,
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.reset = NULL,
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{ .available = et3000_available },
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.speed_changed = et3000_speed_changed,
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.force_redraw = et3000_force_redraw,
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.config = et3000_config
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};
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@@ -143,6 +143,7 @@ video_cards[] = {
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{ &nec_sv9000_device },
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{ &et4000k_isa_device },
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{ &et2000_device },
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{ &et3000_isa_device },
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{ &et4000_isa_device },
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{ &et4000w32_device },
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{ &et4000w32i_isa_device },
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@@ -708,6 +708,7 @@ VIDOBJ := agpgart.o video.o \
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vid_bt48x_ramdac.o \
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vid_av9194.o vid_icd2061.o vid_ics2494.o vid_ics2595.o \
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vid_cl54xx.o \
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vid_et3000.o \
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vid_et4000.o vid_sc1148x_ramdac.o \
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vid_sc1502x_ramdac.o \
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vid_et4000w32.o vid_stg_ramdac.o \
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Reference in New Issue
Block a user