hercules updates by hal (herc mode/status reg, herc textmode drawing), fixes blockout
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3256
This commit is contained in:
Sebastian Strohhäcker
parent
a5e74da117
commit
a9f0ec5b10
6 changed files with 166 additions and 82 deletions
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@ -1,5 +1,5 @@
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/*
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* Copyright (C) 2002-2008 The DOSBox Team
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* Copyright (C) 2002-2009 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -16,7 +16,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* $Id: vga_draw.cpp,v 1.104 2008-12-28 20:22:12 c2woody Exp $ */
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/* $Id: vga_draw.cpp,v 1.105 2009-01-11 18:22:59 c2woody Exp $ */
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#include <string.h>
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#include <math.h>
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@ -373,6 +373,55 @@ skip_cursor:
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return TempLine;
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}
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static Bit8u * VGA_TEXT_Herc_Draw_Line(Bitu vidstart, Bitu line) {
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Bits font_addr;
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Bit32u * draw=(Bit32u *)TempLine;
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const Bit8u *vidmem = &vga.tandy.draw_base[vidstart];
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for (Bitu cx=0;cx<vga.draw.blocks;cx++) {
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Bitu chr=vidmem[cx*2];
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Bitu attrib=vidmem[cx*2+1];
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if (!(attrib&0x77)) {
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// 00h, 80h, 08h, 88h produce black space
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*draw++=0;
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*draw++=0;
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} else {
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Bit32u bg, fg;
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bool underline=false;
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if ((attrib&0x77)==0x70) {
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bg = TXT_BG_Table[0x7];
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if (attrib&0x8) fg = TXT_FG_Table[0xf];
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else fg = TXT_FG_Table[0x0];
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} else {
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if (((Bitu)(vga.crtc.underline_location&0x1f)==line) && ((attrib&0x77)==0x1)) underline=true;
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bg = TXT_BG_Table[0x0];
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if (attrib&0x8) fg = TXT_FG_Table[0xf];
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else fg = TXT_FG_Table[0x7];
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}
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Bit32u mask1, mask2;
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if (GCC_UNLIKELY(underline)) mask1 = mask2 = FontMask[attrib >> 7];
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else {
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Bitu font=vga.draw.font_tables[0][chr*32+line];
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mask1=TXT_Font_Table[font>>4] & FontMask[attrib >> 7]; // blinking
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mask2=TXT_Font_Table[font&0xf] & FontMask[attrib >> 7];
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}
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*draw++=(fg&mask1) | (bg&~mask1);
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*draw++=(fg&mask2) | (bg&~mask2);
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}
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}
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if (!vga.draw.cursor.enabled || !(vga.draw.cursor.count&0x8)) goto skip_cursor;
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font_addr = (vga.draw.cursor.address-vidstart) >> 1;
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if (font_addr>=0 && font_addr<(Bits)vga.draw.blocks) {
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if (line<vga.draw.cursor.sline) goto skip_cursor;
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if (line>vga.draw.cursor.eline) goto skip_cursor;
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draw=(Bit32u *)&TempLine[font_addr*8];
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Bit32u att=TXT_FG_Table[vga.tandy.draw_base[vga.draw.cursor.address+1]&0xf];
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*draw++=att;*draw++=att;
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}
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skip_cursor:
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return TempLine;
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}
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static Bit8u * VGA_TEXT_Xlat16_Draw_Line(Bitu vidstart, Bitu line) {
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Bits font_addr;
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Bit16u * draw=(Bit16u *)TempLine;
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@ -987,8 +1036,8 @@ void VGA_SetupDrawing(Bitu /*val*/) {
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clock=((vga.tandy.mode_control & 1) ? 14318180 : (14318180/2))/8;
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break;
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case MCH_HERC:
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if (vga.herc.mode_control & 0x2) clock=14318180/16;
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else clock=14318180/8;
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if (vga.herc.mode_control & 0x2) clock=16000000/16;
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else clock=16000000/8;
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break;
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default:
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clock = 14318180;
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@ -1245,16 +1294,22 @@ void VGA_SetupDrawing(Bitu /*val*/) {
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break;
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case M_TANDY_TEXT:
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doublewidth=(vga.tandy.mode_control & 0x1)==0;
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case M_HERC_TEXT:
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aspect_ratio=1;
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doubleheight=(vga.mode!=M_HERC_TEXT);
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doubleheight=true;
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vga.draw.blocks=width;
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width<<=3;
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VGA_DrawLine=VGA_TEXT_Draw_Line;
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break;
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case M_HERC_TEXT:
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aspect_ratio=1;
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vga.draw.blocks=width;
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width<<=3;
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VGA_DrawLine=VGA_TEXT_Herc_Draw_Line;
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break;
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default:
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LOG(LOG_VGA,LOG_ERROR)("Unhandled VGA mode %d while checking for resolution",vga.mode);
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};
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break;
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}
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VGA_CheckScanLength();
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if (vga.draw.double_scan) {
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if (IS_VGA_ARCH) height/=2;
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@ -1,5 +1,5 @@
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/*
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* Copyright (C) 2002-2008 The DOSBox Team
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* Copyright (C) 2002-2009 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -16,7 +16,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* $Id: vga_misc.cpp,v 1.37 2008-06-03 18:35:32 c2woody Exp $ */
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/* $Id: vga_misc.cpp,v 1.38 2009-01-11 18:22:59 c2woody Exp $ */
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#include "dosbox.h"
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#include "inout.h"
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@ -39,40 +39,46 @@ Bitu vga_read_p3da(Bitu port,Bitu iolen) {
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vga.internal.attrindex=false;
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vga.tandy.pcjr_flipflop=false;
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switch (machine) {
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case MCH_HERC:
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{
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// 3BAh (R): Status Register
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// bit 0 Horizontal sync
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// 3 Video signal
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// 7 Vertical sync
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if(timeInFrame >= vga.draw.delay.vrstart &&
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timeInFrame <= vga.draw.delay.vrend)
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retval |= 0x80;
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double timeInLine=fmod(timeInFrame,vga.draw.delay.htotal);
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if(timeInLine >= vga.draw.delay.hrstart &&
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timeInLine <= vga.draw.delay.hrend)
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retval |= 1;
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retval |= 0x10; //Hercules ident
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break;
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}
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default:
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if (machine!=MCH_HERC) {
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// 3DAh (R): Status Register
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// bit 0 Horizontal or Vertical blanking
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// 3 Vertical sync
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if(timeInFrame >= vga.draw.delay.vrstart &&
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if (timeInFrame >= vga.draw.delay.vrstart &&
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timeInFrame <= vga.draw.delay.vrend)
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retval |= 8;
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if(timeInFrame >= vga.draw.delay.vdend)
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if (timeInFrame >= vga.draw.delay.vdend) {
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retval |= 1;
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else {
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} else {
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double timeInLine=fmod(timeInFrame,vga.draw.delay.htotal);
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if(timeInLine >= (vga.draw.delay.hblkstart) &&
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timeInLine <= vga.draw.delay.hblkend){
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if (timeInLine >= vga.draw.delay.hblkstart &&
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timeInLine <= vga.draw.delay.hblkend) {
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retval |= 1;
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}
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}
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} else {
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// 3BAh (R): Status Register
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// bit 0 Horizontal sync
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// 1 Light pen status (only some cards)
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// 3 Video signal
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// 4-6 000: Hercules
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// 001: Hercules Plus
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// 101: Hercules InColor
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// 111: Unknown clone
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// 7 Vertical sync inverted
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retval=0x72; // Hercules ident; from a working card (Winbond W86855AF)
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// Another known working card has 0x76 ("KeysoGood", full-length)
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if (timeInFrame < vga.draw.delay.vrstart ||
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timeInFrame > vga.draw.delay.vrend) retval |= 0x80;
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double timeInLine=fmod(timeInFrame,vga.draw.delay.htotal);
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if (timeInLine >= vga.draw.delay.hrstart &&
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timeInLine <= vga.draw.delay.hrend) retval |= 0x1;
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// 688 Attack sub checks bit 3 - as a workaround have the bit enabled
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// if no sync active (corresponds to a completely white screen)
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if ((retval&0x81)==0x80) retval |= 0x8;
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}
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return retval;
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}
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@ -1,5 +1,5 @@
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/*
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* Copyright (C) 2002-2008 The DOSBox Team
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* Copyright (C) 2002-2009 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -16,7 +16,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* $Id: vga_other.cpp,v 1.23 2008-08-06 18:32:35 c2woody Exp $ */
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/* $Id: vga_other.cpp,v 1.24 2009-01-11 18:22:59 c2woody Exp $ */
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#include <string.h>
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#include <math.h>
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@ -432,26 +432,40 @@ static void write_pcjr(Bitu port,Bitu val,Bitu iolen) {
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static void write_hercules(Bitu port,Bitu val,Bitu iolen) {
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switch (port) {
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case 0x3b8:
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if (vga.herc.enable_bits & 1 ) {
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vga.herc.mode_control&=~0x2;
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vga.herc.mode_control|=(val&0x2);
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if (val & 0x2) {
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VGA_SetMode(M_HERC_GFX);
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} else {
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case 0x3b8: {
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// the protected bits can always be cleared but only be set if the
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// protection bits are set
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if (vga.herc.mode_control&0x2) {
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// already set
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if (!(val&0x2)) {
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vga.herc.mode_control &= ~0x2;
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VGA_SetMode(M_HERC_TEXT);
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}
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} else {
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// not set, can only set if protection bit is set
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if ((val & 0x2) && (vga.herc.enable_bits & 0x1)) {
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vga.herc.mode_control |= 0x2;
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VGA_SetMode(M_HERC_GFX);
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}
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}
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if ((vga.herc.enable_bits & 0x2) && ((vga.herc.mode_control ^ val)&0x80)) {
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vga.herc.mode_control^=0x80;
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if (vga.herc.mode_control&0x80) {
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if (!(val&0x80)) {
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vga.herc.mode_control &= ~0x80;
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vga.tandy.draw_base = &vga.mem.linear[0];
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}
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} else {
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if ((val & 0x80) && (vga.herc.enable_bits & 0x2)) {
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vga.herc.mode_control |= 0x80;
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vga.tandy.draw_base = &vga.mem.linear[32*1024];
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}
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}
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vga.tandy.draw_base = &vga.mem.linear[(vga.herc.mode_control & 0x80 ) ? 32*1024 : 0];
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vga.draw.blinking = (val&0x20)!=0;
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vga.herc.mode_control &= 0x82;
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vga.herc.mode_control |= val & ~0x82;
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break;
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case 0x3bf:
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if ( vga.herc.enable_bits ^ val) {
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vga.herc.enable_bits=val;
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VGA_SetupHandlers();
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}
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case 0x3bf:
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vga.herc.enable_bits=val;
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break;
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}
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}
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@ -488,12 +502,6 @@ void VGA_SetupOther(void) {
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MAPPER_AddHandler(IncreaseHue,MK_f11,MMOD2,"inchue","Inc Hue");
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MAPPER_AddHandler(DecreaseHue,MK_f11,0,"dechue","Dec Hue");
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}
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if (machine==MCH_HERC) {
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vga.herc.enable_bits=0;
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vga.herc.mode_control=0x8;
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IO_RegisterWriteHandler(0x3b8,write_hercules,IO_MB);
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IO_RegisterWriteHandler(0x3bf,write_hercules,IO_MB);
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}
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if (machine==MCH_TANDY) {
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write_tandy( 0x3df, 0x0, 0 );
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IO_RegisterWriteHandler(0x3d8,write_tandy,IO_MB);
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@ -509,6 +517,22 @@ void VGA_SetupOther(void) {
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IO_RegisterWriteHandler(0x3da,write_pcjr,IO_MB);
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IO_RegisterWriteHandler(0x3df,write_pcjr,IO_MB);
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}
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if (machine==MCH_HERC) {
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Bitu base=0x3b0;
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for (Bitu i = 0; i < 4; i++) {
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// The registers are repeated as the address is not decoded properly;
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// The official ports are 3b4, 3b5
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IO_RegisterWriteHandler(base+i*2,write_crtc_index_other,IO_MB);
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IO_RegisterWriteHandler(base+i*2+1,write_crtc_data_other,IO_MB);
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IO_RegisterReadHandler(base+i*2,read_crtc_index_other,IO_MB);
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IO_RegisterReadHandler(base+i*2+1,read_crtc_data_other,IO_MB);
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}
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vga.herc.enable_bits=0;
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vga.herc.mode_control=0xa; // first mode written will be text mode
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vga.crtc.underline_location = 13;
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IO_RegisterWriteHandler(0x3b8,write_hercules,IO_MB);
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IO_RegisterWriteHandler(0x3bf,write_hercules,IO_MB);
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}
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if (machine==MCH_CGA) {
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Bitu base=0x3d0;
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for (Bitu port_ct=0; port_ct<4; port_ct++) {
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@ -518,8 +542,8 @@ void VGA_SetupOther(void) {
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IO_RegisterReadHandler(base+port_ct*2+1,read_crtc_data_other,IO_MB);
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}
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}
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if (machine==MCH_HERC || IS_TANDY_ARCH) {
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Bitu base=machine==MCH_HERC ? 0x3b4 : 0x3d4;
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if (IS_TANDY_ARCH) {
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Bitu base=0x3d4;
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IO_RegisterWriteHandler(base,write_crtc_index_other,IO_MB);
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IO_RegisterWriteHandler(base+1,write_crtc_data_other,IO_MB);
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IO_RegisterReadHandler(base,read_crtc_index_other,IO_MB);
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