Code polishing

This commit is contained in:
tudnai 2020-04-27 20:32:58 -07:00
parent 9e32839a4d
commit deb6373f18
3 changed files with 133 additions and 42 deletions

View File

@ -678,7 +678,7 @@ class HiRes: NSView {
if videoMode.mixed == 1 {
height = HiRes.MixedHeight
}
if MEMcfg.page2 == 1 {
if MEMcfg.txt_page_2 == 1 {
HiResBufferPointer = HiResBuffer2
}
else {

View File

@ -100,10 +100,13 @@ typedef struct MEMcfg_s {
unsigned WR_RAM : 1;
unsigned RAM_BANK_2 : 1;
unsigned AUX_BANK : 1;
unsigned page2 : 1; // 0: page 1 1: page 2 (aux video memory)
unsigned intCxROM : 1; // 0: Slot Cx ROM 1: Internal Cx ROM
unsigned slotC3ROM : 1; // 0: Internal ROM 1: Slot 3 ROM
unsigned is80STORE : 1;
unsigned txt_page_2 : 1; // 0: page 1 1: page 2 (aux video memory)
unsigned int_Cx_ROM : 1; // 0: Slot Cx ROM 1: Internal Cx ROM
unsigned slot_C3_ROM : 1; // 0: Internal ROM 1: Slot 3 ROM
unsigned is_80STORE : 1;
unsigned RD_AUX_MEM : 1;
unsigned WR_AUX_MEM : 1;
unsigned ALT_ZP : 1;
} MEMcfg_t;

View File

@ -72,10 +72,17 @@ uint8_t * const RAM = Apple2_64K_RAM; // Pointer to the main memory
#define SWITCH_ROM_PAGE( tbl,tpg, mem,mpg ) \
(tbl)[ (tpg) ] = DEF_RAM_PAGE( mem, (mpg) );
#define SWITCH_STACK_ZP( tbl, mem ) \
(tbl)[ 0x00 ] = DEF_RAM_PAGE(mem, 0x00); \
(tbl)[ 0x01 ] = DEF_RAM_PAGE(mem, 0x01);
#define SWITCH_CX_ROM( tbl,tpg, mem,mpg ) \
/* (tbl)[ (tpg) + 0x00 ] = DEF_RAM_PAGE(mem, (mpg) + 0x00); */ \
(tbl)[ (tpg) + 0x01 ] = DEF_RAM_PAGE(mem, (mpg) + 0x01); \
(tbl)[ (tpg) + 0x02 ] = DEF_RAM_PAGE(mem, (mpg) + 0x02); \
(tbl)[ (tpg) + 0x03 ] = DEF_RAM_PAGE(mem, (mpg) + 0x03); \
/* (tbl)[ (tpg) + 0x03 ] = DEF_RAM_PAGE(mem, (mpg) + 0x03); */ \
(tbl)[ (tpg) + 0x04 ] = DEF_RAM_PAGE(mem, (mpg) + 0x04); \
(tbl)[ (tpg) + 0x05 ] = DEF_RAM_PAGE(mem, (mpg) + 0x05); \
(tbl)[ (tpg) + 0x06 ] = DEF_RAM_PAGE(mem, (mpg) + 0x06); \
@ -89,6 +96,19 @@ uint8_t * const RAM = Apple2_64K_RAM; // Pointer to the main memory
(tbl)[ (tpg) + 0x0E ] = DEF_RAM_PAGE(mem, (mpg) + 0x0E); \
(tbl)[ (tpg) + 0x0F ] = DEF_RAM_PAGE(mem, (mpg) + 0x0F);
#define SWITCH_AUX_MEM( tbl, mem ) \
(tbl)[ 0x02 ] = DEF_RAM_PAGE(mem, 0x02); \
(tbl)[ 0x03 ] = DEF_RAM_PAGE(mem, 0x03); \
(tbl)[ 0x04 ] = DEF_RAM_PAGE(mem, 0x04); \
(tbl)[ 0x05 ] = DEF_RAM_PAGE(mem, 0x05); \
(tbl)[ 0x06 ] = DEF_RAM_PAGE(mem, 0x06); \
(tbl)[ 0x07 ] = DEF_RAM_PAGE(mem, 0x07); \
(tbl)[ 0x08 ] = DEF_RAM_PAGE(mem, 0x08); \
(tbl)[ 0x09 ] = DEF_RAM_PAGE(mem, 0x09); \
(tbl)[ 0x0A ] = DEF_RAM_PAGE(mem, 0x0A); \
(tbl)[ 0x0B ] = DEF_RAM_PAGE(mem, 0x0B);
#define SWITCH_RAM_PAGE16( tbl,tpg, mem,mpg ) \
(tbl)[ (tpg) + 0x00 ] = DEF_RAM_PAGE(mem, (mpg) + 0x00); \
(tbl)[ (tpg) + 0x01 ] = DEF_RAM_PAGE(mem, (mpg) + 0x01); \
@ -223,7 +243,7 @@ enum slot {
};
MEMcfg_t MEMcfg = { 1, 0, 0, 0, 0, 0, 0 };
MEMcfg_t MEMcfg = { 1, 0, 0, 0, 0, 0, 0, 0, 0 };
// https://www.kreativekorp.com/miscpages/a2info/iomemory.shtml
// Comp: O = Apple II+ E = Apple IIe C = Apple IIc G = Apple IIgs
@ -287,12 +307,19 @@ enum mmio {
io_DISK_SHIFT = 0xC08F,
// Memory
io_RDMAINRAM = 0xC002, // ECG W If 80STORE Off: Read Main Mem $0200-$BFFF
io_RDCARDRAM = 0xC003, // ECG W If 80STORE Off: Read Aux Mem $0200-$BFFF
io_WRMAINRAM = 0xC004, // ECG W If 80STORE Off: Write Main Mem $0200-$BFFF
io_WRCARDRAM = 0xC005, // ECG W If 80STORE Off: Write Aux Mem $0200-$BFFF
io_SETSLOTCXROM = 0xC006, // E G W Disable Internal ROM / Enable Peripheral ROM ($C100-$CFFF)
io_SETINTCXROM = 0xC007, // E G W Enable Internal ROM ($C100-$CFFF)
io_RDCXROM = 0xC015, // E G R7 Read state of $C100-$CFFF soft switch -- Status of Periph/ROM Access
io_RSTXINT = 0xC015, // C R Reset Mouse X0 Interrupt
io_SETSTDZP = 0xC008, // ECG W Main Stack and Zero Page
io_SETALTZP = 0xC009, // ECG W Aux Stack and Zero Page
io_SETINTC3ROM = 0xC00A, // E G W ROM in Slot 3
io_SETSLOTC3ROM = 0xC00B, // E G W ROM in Aux Slot
io_RDCXROM = 0xC015, // E G R7 Read state of $C100-$CFFF soft switch -- Status of Periph/ROM Access
io_RSTXINT = 0xC015, // C R Reset Mouse X0 Interrupt
io_RDALTZP = 0xC016, // ECG R7 Status of Main/Aux Stack and Zero Page
io_RDC3ROM = 0xC017, // E G R7 Status of Slot 3/Aux Slot ROM
io_RSTYINT = 0xC017, // C R Reset Mouse Y0 Interrupt
io_MEM_RDRAM_NOWR_2 = 0xC080,
@ -351,14 +378,15 @@ void resetMemory() {
SWITCH_RAM_PAGE16( RAM_PG_WR_TBL, 0xE0, Apple2_Dummy_RAM, 0 );
SWITCH_RAM_PAGE16( RAM_PG_WR_TBL, 0xF0, Apple2_Dummy_RAM, 0 );
MEMcfg.RAM_16K = 1;
MEMcfg.RAM_16K = 0;
MEMcfg.RAM_128K = 0;
MEMcfg.RAM_128K = 1;
MEMcfg.RD_RAM = 0;
MEMcfg.WR_RAM = 0;
MEMcfg.RAM_BANK_2 = 0;
MEMcfg.AUX_BANK = 0;
MEMcfg.is80STORE = 0;
MEMcfg.is_80STORE = 0;
MEMcfg.RD_AUX_MEM = 0;
MEMcfg.WR_AUX_MEM = 0;
// Aux Video Memory
memset( AUX, 0, sizeof(Apple2_64K_AUX) );
@ -373,19 +401,43 @@ void resetMemory() {
void textPageSelect() {
if ( MEMcfg.is80STORE && MEMcfg.page2 ) {
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_64K_AUX, 0x04)
SWITCH_VIDEO_RAM( RAM_PG_WR_TBL, 0x04, Apple2_64K_AUX, 0x04)
}
else {
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_64K_RAM, 0x04)
SWITCH_VIDEO_RAM( RAM_PG_WR_TBL, 0x04, Apple2_64K_RAM, 0x04)
}
if ( MEMcfg.is_80STORE && MEMcfg.txt_page_2 ) {
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_64K_AUX, 0x04)
SWITCH_VIDEO_RAM( RAM_PG_WR_TBL, 0x04, Apple2_64K_AUX, 0x04)
}
else {
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_64K_RAM, 0x04)
SWITCH_VIDEO_RAM( RAM_PG_WR_TBL, 0x04, Apple2_64K_RAM, 0x04)
}
}
void auxMemorySelect() {
if ( MEMcfg.is_80STORE ) {
if ( MEMcfg.RD_AUX_MEM ) {
SWITCH_AUX_MEM( RAM_PG_RD_TBL, Apple2_64K_AUX );
}
else {
SWITCH_AUX_MEM( RAM_PG_RD_TBL, Apple2_64K_RAM );
}
if ( MEMcfg.WR_AUX_MEM ) {
SWITCH_AUX_MEM( RAM_PG_WR_TBL, Apple2_64K_AUX );
}
else {
SWITCH_AUX_MEM( RAM_PG_WR_TBL, Apple2_64K_RAM );
}
}
else {
SWITCH_AUX_MEM( RAM_PG_RD_TBL, Apple2_64K_RAM );
SWITCH_AUX_MEM( RAM_PG_WR_TBL, Apple2_64K_RAM );
}
}
INLINE uint8_t ioRead( uint16_t addr ) {
dbgPrintf("mmio read:%04X\n", addr);
if (outdev) fprintf(outdev, "ioRead:%04X\n", addr);
uint8_t currentMagnet = 0;
@ -425,26 +477,29 @@ INLINE uint8_t ioRead( uint16_t addr ) {
return videoMode.col80 << 7;
case io_TAPEIN:
return MEMcfg.page2 << 7;
return MEMcfg.txt_page_2 << 7;
case io_RDCXROM:
return MEMcfg.intCxROM << 7;
return MEMcfg.int_Cx_ROM << 7;
case io_RDALTZP:
return MEMcfg.ALT_ZP << 7;
case io_RDC3ROM:
return MEMcfg.slotC3ROM << 7;
return MEMcfg.slot_C3_ROM << 7;
case io_RD80STORE:
return MEMcfg.is80STORE << 7;
return MEMcfg.is_80STORE << 7;
case io_VID_TXTPAGE1:
// printf("io_VID_TXTPAGE1\n");
MEMcfg.page2 = 0;
MEMcfg.txt_page_2 = 0;
textPageSelect();
break;
case io_VID_TXTPAGE2:
// printf("io_VID_TXTPAGE2\n");
MEMcfg.page2 = 1;
MEMcfg.txt_page_2 = 1;
textPageSelect();
break;
@ -645,8 +700,9 @@ void kbdInput ( uint8_t code ) {
code |= 0x80;
for( int i = 10000; i && ( RAM[io_KBD] > 0x7F ); --i ) {
usleep(10);
// timeout with linearly increasing sleep
for( int i = 1; i < 100 && ( RAM[io_KBD] > 0x7F ); i++ ) {
usleep( i * 2 );
}
RAM[io_KBD] = RAM[io_KBDSTRB] = code;
@ -654,7 +710,7 @@ void kbdInput ( uint8_t code ) {
INLINE void ioWrite( uint16_t addr, uint8_t val ) {
// printf("ioWrite:%04X (A:%02X)\n", addr, m6502.A);
if (outdev) fprintf(outdev, "ioWrite:%04X (A:%02X)\n", addr, m6502.A);
switch (addr) {
case io_KBDSTRB:
RAM[io_KBD] &= 0x7F;
@ -662,32 +718,64 @@ INLINE void ioWrite( uint16_t addr, uint8_t val ) {
case io_SETSLOTCXROM:
// printf("io_SETSLOTCXROM\n");
MEMcfg.intCxROM = 0;
MEMcfg.int_Cx_ROM = 0;
// SWITCH_RAM_PAGE16( RAM_PG_RD_TBL, 0xC0, Apple2_64K_RAM, 0xC0);
SWITCH_CX_ROM( RAM_PG_RD_TBL, 0xC0, Apple2_64K_RAM, 0xC0);
// RAM_PG_RD_TBL[ 0xC0 ] = DEF_RAM_PAGE(Apple2_64K_RAM, 0xC0);
break;
case io_RDMAINRAM:
// printf("io_RDMAINRAM\n");
MEMcfg.RD_AUX_MEM = 0;
auxMemorySelect();
break;
case io_RDCARDRAM:
// printf("io_RDCARDRAM\n");
MEMcfg.RD_AUX_MEM = 1;
auxMemorySelect();
break;
case io_WRMAINRAM:
// printf("io_WRMAINRAM\n");
MEMcfg.WR_AUX_MEM = 0;
auxMemorySelect();
break;
case io_WRCARDRAM:
// printf("io_WRCARDRAM\n");
MEMcfg.WR_AUX_MEM = 1;
auxMemorySelect();
break;
case io_SETSTDZP:
MEMcfg.ALT_ZP = 0;
SWITCH_STACK_ZP(RAM_PG_RD_TBL, Apple2_64K_RAM);
SWITCH_STACK_ZP(RAM_PG_WR_TBL, Apple2_64K_RAM);
break;
case io_SETALTZP:
MEMcfg.ALT_ZP = 1;
SWITCH_STACK_ZP(RAM_PG_RD_TBL, Apple2_64K_AUX);
SWITCH_STACK_ZP(RAM_PG_WR_TBL, Apple2_64K_AUX);
break;
case io_SETINTCXROM:
// printf("io_SETINTCXROM\n");
MEMcfg.intCxROM = 1;
// SWITCH_RAM_PAGE16( RAM_PG_RD_TBL, 0xC0, Apple2_16K_ROM, 0x00);
MEMcfg.int_Cx_ROM = 1;
SWITCH_CX_ROM( RAM_PG_RD_TBL, 0xC0, Apple2_16K_ROM, 0x00);
// RAM_PG_RD_TBL[ 0xC0 ] = DEF_RAM_PAGE(Apple2_16K_ROM, 0x00);
break;
case io_SETSLOTC3ROM:
// printf("io_SETSLOTC3ROM\n");
MEMcfg.slotC3ROM = 1;
MEMcfg.slot_C3_ROM = 1;
SWITCH_ROM_PAGE( RAM_PG_RD_TBL, 0xC3, Apple2_64K_RAM, 0xC3);
// RAM_PG_RD_TBL[ 0xC3 ] = DEF_RAM_PAGE(Apple2_64K_RAM, 0xC3);
break;
case io_SETINTC3ROM:
// printf("io_SETINTC3ROM\n");
MEMcfg.slotC3ROM = 0;
MEMcfg.slot_C3_ROM = 0;
SWITCH_ROM_PAGE( RAM_PG_RD_TBL, 0xC3, Apple2_16K_ROM, 0x03);
// RAM_PG_RD_TBL[ 0xC3 ] = DEF_RAM_PAGE(Apple2_16K_ROM, 0x03);
break;
case io_VID_CLR80VID:
@ -709,25 +797,25 @@ INLINE void ioWrite( uint16_t addr, uint8_t val ) {
case io_80STOREOFF:
// printf("io_80STOREOFF\n");
MEMcfg.is80STORE = 0;
MEMcfg.is_80STORE = 0;
textPageSelect();
break;
case io_80STOREON:
// printf("io_80STOREON\n");
MEMcfg.is80STORE = 1;
MEMcfg.is_80STORE = 1;
textPageSelect();
break;
case io_VID_TXTPAGE1:
// printf("io_VID_TXTPAGE1\n");
MEMcfg.page2 = 0;
MEMcfg.txt_page_2 = 0;
textPageSelect();
break;
case io_VID_TXTPAGE2:
// printf("io_VID_TXTPAGE2\n");
MEMcfg.page2 = 1;
MEMcfg.txt_page_2 = 1;
textPageSelect();
break;