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RGB card support: (#850)

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. removed the precondition for enabling the extra RGB DHIRES modes
. changed IOUDIS soft-switch so that it's for //c only
This commit is contained in:
tomcw
2020-10-31 16:10:18 +00:00
parent e24436f7ec
commit fb0871672c
2 changed files with 16 additions and 27 deletions
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source/Memory.cpp
+7 -7
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@@ -94,8 +94,8 @@ MEMORY MANAGEMENT SOFT SWITCHES
$C009 W ALTZPON Enable aux memory from $0000-$01FF & avl BSR
$C00A W SLOTC3ROMOFF Enable main ROM from $C300-$C3FF
$C00B W SLOTC3ROMON Enable slot ROM from $C300-$C3FF
$C07E W IOUDIS [Enhanced //e] On: disable IOU access for addresses $C058 to $C05F; enable access to DHIRES switch
$C07F W IOUDIS [Enhanced //e] Off: enable IOU access for addresses $C058 to $C05F; disable access to DHIRES switch
$C07E W IOUDIS [//c] On: disable IOU access for addresses $C058 to $C05F; enable access to DHIRES switch
$C07F W IOUDIS [//c] Off: enable IOU access for addresses $C058 to $C05F; disable access to DHIRES switch
VIDEO SOFT SWITCHES
$C00C W 80COLOFF Turn off 80 column display
@@ -130,8 +130,8 @@ SOFT SWITCH STATUS FLAGS
$C01D R7 HIRES 1=high resolution graphics 0=low resolution
$C01E R7 ALTCHARSET 1=alt character set on 0=alt char set off
$C01F R7 80COL 1=80 col display on 0=80 col display off
$C07E R7 RDIOUDIS [Enhanced //e] 1=IOUDIS off 0=IOUDIS on
$C07F R7 RDDHIRES [Enhanced //e] 1=DHIRES on 0=DHIRES off
$C07E R7 RDIOUDIS [//c] 1=IOUDIS off 0=IOUDIS on
$C07F R7 RDDHIRES [Enhanced //e? or //c] 1=DHIRES on 0=DHIRES off
*/
@@ -596,7 +596,7 @@ static BYTE __stdcall IORead_C07x(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG
case 0xB: return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xC: return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xD: return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xE: return IsEnhancedIIE() ? MemReadFloatingBus(SW_IOUDIS ? true : false, nExecutedCycles) // GH#636
case 0xE: return IS_APPLE2C() ? MemReadFloatingBus(SW_IOUDIS ? true : false, nExecutedCycles) // GH#636
: IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xF: return IsEnhancedIIEorIIC() ? MemReadFloatingBus(VideoGetSWDHIRES(), nExecutedCycles) // GH#636
: IO_Null(pc, addr, bWrite, d, nExecutedCycles);
@@ -632,12 +632,12 @@ static BYTE __stdcall IOWrite_C07x(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULON
case 0xB: return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xC: return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xD: return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
case 0xE: if (IsEnhancedIIE())
case 0xE: if (IS_APPLE2C())
SetMemMode(memmode & ~MF_IOUDIS); // disable IOU access for addresses $C058 to $C05F; enable access to DHIRES switch
else
return IO_Null(pc, addr, bWrite, d, nExecutedCycles);
break;
case 0xF: if (IsEnhancedIIE())
case 0xF: if (IS_APPLE2C())
SetMemMode(memmode | MF_IOUDIS); // enable IOU access for addresses $C058 to $C05F; disable access to DHIRES switch
else
return IO_Null(pc, addr, bWrite, d, nExecutedCycles);