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Code Issues Projects Releases Wiki Activity

Fixed some MMU issues

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This commit is contained in:
tudnai 2020-08-03 22:16:11 -07:00
parent 15a2fd84ac
commit 9741a49b80
5 changed files with 84 additions and 17 deletions
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4
A2Mac.xcodeproj/project.pbxproj
View File

@ -11,7 +11,6 @@
320B3FC424AD88B0005EA133 /* power.png in Copy Image Files */ = {isa = PBXBuildFile; fileRef = 320B3FC324AD88B0005EA133 /* power.png */; };
320B4FC124B182DE00070038 /* Apple Disk II.png in Copy Image Files */ = {isa = PBXBuildFile; fileRef = 320B4FC024B182DD00070038 /* Apple Disk II.png */; };
320F2A8824CFD74100671B35 /* Steve2Icon.icns in Resources */ = {isa = PBXBuildFile; fileRef = 320F2A8724CFD74000671B35 /* Steve2Icon.icns */; };
320F2AAD24D53B4100671B35 /* 6502.c in Sources */ = {isa = PBXBuildFile; fileRef = 32439F7422ECD8AD0077AAE0 /* 6502.c */; };
3213936624079C30007F5C4A /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 32BFFB6022EACC660003B53F /* Main.storyboard */; };
323D042E248980600086A901 /* Preferences.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 323D042D248980600086A901 /* Preferences.storyboard */; };
323D043024898AB70086A901 /* PreferencesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 323D042F24898AB70086A901 /* PreferencesViewController.swift */; };
@ -111,6 +110,7 @@
32F1D03824CE3AA30058AC75 /* RepeatingTimer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 32C45305232E3EEF0000EBA1 /* RepeatingTimer.swift */; };
32F1D03924CE3AB10058AC75 /* PreferencesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 323D042F24898AB70086A901 /* PreferencesViewController.swift */; };
32F1D03A24CE3AB10058AC75 /* PreferencesWindowController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 323D04312489BFD80086A901 /* PreferencesWindowController.swift */; };
32F8994924D9149800C85BE5 /* 6502.c in Sources */ = {isa = PBXBuildFile; fileRef = 32439F7422ECD8AD0077AAE0 /* 6502.c */; };
32F8A87C24A3A84300EE6735 /* PrintChar21.ttf in Copy Font Files */ = {isa = PBXBuildFile; fileRef = 325EB67B23FBD43800C6B4A4 /* PrintChar21.ttf */; };
32F8A87D24A3A84700EE6735 /* PRNumber3.ttf in Copy Font Files */ = {isa = PBXBuildFile; fileRef = 32089E4724556DBD0036E667 /* PRNumber3.ttf */; };
32F8A87F24A3A8A000EE6735 /* apple.rom in Copy ROM Images */ = {isa = PBXBuildFile; fileRef = 32439F8422ECD8AD0077AAE0 /* apple.rom */; };
@ -1208,11 +1208,11 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
320F2AAD24D53B4100671B35 /* 6502.c in Sources */,
32BFFB5B22EACC630003B53F /* AppDelegate.swift in Sources */,
32E3126D24AC033A00E61891 /* ToolBarController.swift in Sources */,
323D043024898AB70086A901 /* PreferencesViewController.swift in Sources */,
323D04332489BFD80086A901 /* PreferencesWindowController.swift in Sources */,
32F8994924D9149800C85BE5 /* 6502.c in Sources */,
32E3126924A98B9300E61891 /* dsk2woz.c in Sources */,
325EB63623F8F78300C6B4A4 /* disk.c in Sources */,
325EB62F23F8856F00C6B4A4 /* woz.c in Sources */,

11
A2Mac.xcodeproj/project.xcworkspace/xcuserdata/trudnai.xcuserdatad/xcdebugger/Expressions.xcexplist
View File

@ -95,6 +95,9 @@
<PersistentString
value = "m6502.A">
</PersistentString>
<PersistentString
value = "m6502.PC">
</PersistentString>
<PersistentString
value = "RAM">
</PersistentString>
@ -103,6 +106,14 @@
</PersistentString>
</PersistentStrings>
</ContextState>
<ContextState
contextName = "BRK:6502_instr_misc.h">
<PersistentStrings>
<PersistentString
value = "m6502.PC">
</PersistentString>
</PersistentStrings>
</ContextState>
<ContextState
contextName = "addr_abs:mmio.h">
<PersistentStrings>

4
src/cpu/6502.c
View File

@ -749,9 +749,7 @@ void m6502_ColdReset( const char * bundlePath, const char * romFileName ) {
// Disk ][ ROM in Slot 6
read_rom( bundlePath, "DISK_II_C600.ROM", Apple2_64K_RAM, 0xC600);
memcpy(Apple2_64K_MEM + 0xC600, Apple2_64K_RAM + 0xC600, 0x100);
// read_rom( "/Users/trudnai/Library/Containers/com.gamealloy.A2Mac/Data/", "DISK_II_C600.ROM", Apple2_64K_MEM, 0xC600);
m6502.A = m6502.X = m6502.Y = 0xFF;
// reset vector
m6502.SP = 0xFF; //-3;

2
src/cpu/instructions/6502_instr_shift_rotate.h
View File

@ -40,7 +40,7 @@
absolute,X ASL oper,X 1E 3 7
**/
INLINE void _ASL( uint16_t addr ) {
m6502.C = WRLOMEM[addr] & 0x80;
m6502.C = memread(addr) & 0x80;
set_flags_NZ( WRLOMEM[addr] <<= 1 );
}
INLINE void ASL( uint16_t addr ) {

80
src/dev/mem/mmio.h
View File

@ -59,7 +59,8 @@ uint8_t * const RAM = Apple2_64K_RAM; // Pointer to the Main Memory so
uint8_t * const MEM = Apple2_64K_MEM; // Pointer to the Shadow Memory Map so we can use this from Swift
uint8_t * const RDLOMEM = Apple2_64K_MEM; // for Read $0000 - $BFFF (shadow memory)
uint8_t * WRLOMEM = Apple2_64K_MEM; // for Write $0000 - $BFFF (shadow memory)
uint8_t * WRZEROPG= Apple2_64K_MEM; // for Write $0000 - $0200 (shadow memory)
uint8_t * WRLOMEM = Apple2_64K_MEM; // for Write $0200 - $BFFF (shadow memory)
uint8_t * const RDHIMEM = Apple2_64K_MEM; // for Read / Write $0000 - $BFFF (shadow memory)
uint8_t * WRD0MEM = Apple2_Dummy_RAM; // for writing $D000 - $DFFF
uint8_t * WRHIMEM = Apple2_Dummy_RAM; // for writing $E000 - $FFFF
@ -246,6 +247,8 @@ enum mmio {
io_VID_SET80VID = 0xC00D, // ECG W 80 Columns
io_VID_CLRALTCHAR = 0xC00E, // ECG W Primary Character Set
io_VID_SETALTCHAR = 0xC00F, // ECG W Alternate Character Set
io_VID_RDVBL = 0xC019, // E G R7 Vertical Blanking (E:1=drawing G:0=drawing)
// RSTVBL C R Reset Vertical Blanking Interrupt
io_VID_RDTEXT = 0xC01A, // ECG R7 Status of Text/Graphics
io_VID_RDMIXED = 0xC01B, // ECG R7 Status of Full Screen/Mixed Graphics
io_VID_RDPAGE2 = 0xC01C, // ECG R7 Status of Page 1/Page 2
@ -370,6 +373,11 @@ void resetMemory() {
memset( Apple2_64K_RAM + 0xC000, 0, 0x1000 );
newMEMcfg = MEMcfg;
WRZEROPG= Apple2_64K_MEM; // for Write $0000 - $0200 (shadow memory)
WRLOMEM = Apple2_64K_MEM; // for Write $0200 - $BFFF (shadow memory)
WRD0MEM = Apple2_Dummy_RAM; // for writing $D000 - $DFFF
WRHIMEM = Apple2_Dummy_RAM; // for writing $E000 - $FFFF
}
@ -445,18 +453,62 @@ void auxMemorySelect( MEMcfg_t newMEMcfg ) {
MEMcfg = newMEMcfg;
}
const uint8_t * const shadowZeropage = Apple2_64K_MEM;
const uint8_t * currentZeropage = Apple2_64K_RAM;
void auxZeropageSelect( MEMcfg_t newMEMcfg ) {
// save the content of Shadow Memory
memcpy( (void*) currentZeropage, shadowZeropage, 0x200);
if ( newMEMcfg.is_80STORE ) {
if ( newMEMcfg.ALT_ZP ) {
currentZeropage = Apple2_64K_AUX;
}
else {
currentZeropage = Apple2_64K_RAM;
}
}
WRZEROPG = (uint8_t*)shadowZeropage;
// load new content to shadow memory
memcpy( (void*) shadowZeropage, currentZeropage, 0x200);
MEMcfg = newMEMcfg;
}
void C3MemorySelect( MEMcfg_t newMEMcfg ) {
if ( newMEMcfg.slot_C3_ROM ) {
// load internal ROM to memory
memcpy(Apple2_64K_MEM + 0xC300, Apple2_16K_ROM + 0x300, 0x100);
}
else {
// load peripheral ROM to memory
memcpy(Apple2_64K_MEM + 0xC300, Apple2_64K_RAM + 0xC300, 0x100);
}
MEMcfg = newMEMcfg;
}
void CxMemorySelect( MEMcfg_t newMEMcfg ) {
if ( newMEMcfg.int_Cx_ROM ) {
// load internal ROM to memory
memcpy(Apple2_64K_MEM + 0xC100, Apple2_16K_ROM + 0x100, 16 * KB - 0x100);
memcpy(Apple2_64K_MEM + 0xC100, Apple2_16K_ROM + 0x100, 0xF00);
}
else {
// load peripheral ROM to memory
// memcpy(Apple2_64K_MEM + 0xC100, Apple2_64K_RAM + 0xC100, 16 * KB - 0x100);
// memcpy(Apple2_64K_MEM + 0xC100, Apple2_64K_RAM + 0xC100, 0xF00);
memcpy(Apple2_64K_MEM + 0xC600, Apple2_64K_RAM + 0xC600, 0x100);
}
C3MemorySelect( newMEMcfg );
MEMcfg = newMEMcfg;
}
@ -647,6 +699,9 @@ INLINE uint8_t ioRead( uint16_t addr ) {
spkr_toggle();
return Apple2_64K_RAM[io_SPKR];
case (uint8_t)io_VID_RDVBL:
return (clkfrm < 4550) ? 0x80 : 0;
case (uint8_t)io_VID_RDTEXT:
return videoMode.text << 7;
@ -938,13 +993,13 @@ INLINE void ioWrite( uint16_t addr, uint8_t val ) {
break;
case (uint8_t)io_SETSTDZP:
MEMcfg.ALT_ZP = 0;
// TODO: set zero page table to RAM
newMEMcfg.ALT_ZP = 0;
auxZeropageSelect(newMEMcfg);
break;
case (uint8_t)io_SETALTZP:
MEMcfg.ALT_ZP = 1;
// TODO: set zero page table to AUX
newMEMcfg.ALT_ZP = 1;
auxZeropageSelect(newMEMcfg);
break;
case (uint8_t)io_SETSLOTCXROM:
@ -962,13 +1017,13 @@ INLINE void ioWrite( uint16_t addr, uint8_t val ) {
case (uint8_t)io_SETSLOTC3ROM:
// printf("io_SETSLOTC3ROM\n");
MEMcfg.slot_C3_ROM = 1;
// TODO: set C300 ROM area table to SLOT
C3MemorySelect(MEMcfg);
break;
case (uint8_t)io_SETINTC3ROM:
// printf("io_SETINTC3ROM\n");
MEMcfg.slot_C3_ROM = 0;
// TODO: set C300 ROM area table to INT
C3MemorySelect(MEMcfg);
break;
case (uint8_t)io_VID_CLR80VID:
@ -1195,7 +1250,10 @@ INLINE uint8_t memread( uint16_t addr ) {
**/
INLINE void memwrite8_low( uint16_t addr, uint8_t data ) {
WRLOMEM[addr] = data;
Apple2_64K_MEM[addr] = data;
}
INLINE void memwrite8_zero( uint16_t addr, uint8_t data ) {
WRZEROPG[addr] = data;
}
INLINE void memwrite8_bank2( uint16_t addr, uint8_t data ) {
WRD0MEM[addr] = data;
@ -1225,7 +1283,7 @@ INLINE void memwrite( uint16_t addr, uint8_t data ) {
// RAM
memwrite8_low(addr, data);
}
}
/**