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Add new cmd line -mac-lc-card-dlgr to support the DLGR bug in the 'Apple IIe card Mac LC' (#1258)

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This commit is contained in:
tomcw 2023-11-26 17:59:04 +00:00
parent be427a6a30
commit e7f2e3d541
3 changed files with 19 additions and 1 deletions
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4
source/CmdLine.cpp
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@ -491,6 +491,10 @@ bool ProcessCmdLine(LPSTR lpCmdLine)
{
RGB_SetInvertBit7(true);
}
else if (strcmp(lpCmdLine, "-mac-lc-card-dlgr") == 0) // GH#1258
{
RGB_SetMacLCCardDLGR(true);
}
else if (strcmp(lpCmdLine, "-screenshot-and-exit") == 0) // GH#616: For testing - Use in combination with -load-state
{
g_cmdLine.szScreenshotFilename = GetCurrArg(lpNextArg);

14
source/RGBMonitor.cpp
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@ -1049,7 +1049,8 @@ void UpdateDLoResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
const BYTE auxval_h = auxval >> 4;
const BYTE auxval_l = auxval & 0xF;
auxval = (ROL_NIB(auxval_h)<<4) | ROL_NIB(auxval_l);
if (!RGB_IsMacLCCardDLGR()) // "Apple IIe Card for Macintosh LC" has a bug in its DLGR implementation (GH#1258)
auxval = (ROL_NIB(auxval_h)<<4) | ROL_NIB(auxval_l);
if ((y & 4) == 0)
{
@ -1213,6 +1214,7 @@ static UINT g_rgbFlags = 0;
static UINT g_rgbMode = 0;
static WORD g_rgbPrevAN3Addr = 0;
static bool g_rgbInvertBit7 = false;
static bool g_rgbMacLCCardDLGR = false; // TODO: Persist to save-state
// Video7 RGB card:
// . Clock in the !80COL state to define the 2 flags: F2, F1
@ -1273,6 +1275,11 @@ bool RGB_IsMixModeInvertBit7(void)
return RGB_IsMixMode() && g_rgbInvertBit7;
}
bool RGB_IsMacLCCardDLGR(void)
{
return g_rgbMacLCCardDLGR;
}
void RGB_ResetState(void)
{
g_rgbFlags = 0;
@ -1285,6 +1292,11 @@ void RGB_SetInvertBit7(bool state)
g_rgbInvertBit7 = state;
}
void RGB_SetMacLCCardDLGR(bool state)
{
g_rgbMacLCCardDLGR = state;
}
//===========================================================================
#define SS_YAML_KEY_RGB_CARD "AppleColor RGB Adaptor"

2
source/RGBMonitor.h
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@ -36,8 +36,10 @@ bool RGB_Is160Mode(void);
bool RGB_IsMixMode(void);
bool RGB_Is560Mode(void);
bool RGB_IsMixModeInvertBit7(void);
bool RGB_IsMacLCCardDLGR(void);
void RGB_ResetState(void);
void RGB_SetInvertBit7(bool state);
void RGB_SetMacLCCardDLGR(bool state);
void RGB_SaveSnapshot(class YamlSaveHelper& yamlSaveHelper);
void RGB_LoadSnapshot(class YamlLoadHelper& yamlLoadHelper, UINT cardVersion);