diff options
Diffstat (limited to 'src/apple.c')
| -rw-r--r-- | src/apple.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/src/apple.c b/src/apple.c index b9fd6ae..1e82d0d 100644 --- a/src/apple.c +++ b/src/apple.c @@ -2,10 +2,14 @@ void AppleOn(){ Memory = calloc(MEMORY_SIZE, sizeof(byte)); - initInstructionTable(); + InitInstructionTable(); - // Load ROM + // Load ROM. FILE *ROM = fopen ("rom.bin", "rb"); + if (ROM == NULL) { + printf("\n\rROM does not exist.\n"); + abort(); + } for (int i = 0; i < 256; i++) { Memory[0xFF00+i] = fgetc(ROM); } @@ -19,7 +23,7 @@ void AppleReset(){ Memory = calloc(MEMORY_SIZE, sizeof(byte)); } -byte ToAppleASCII(char x) +byte ToAppleAscii(char x) { if (x < 0x20 || x >= 0x60) return -1; @@ -28,7 +32,7 @@ byte ToAppleASCII(char x) return x; } -byte ToRegularASCII(char x) +byte ToAscii(char x) { if (x < 0x20) x += 0x40; @@ -36,20 +40,21 @@ byte ToRegularASCII(char x) } -byte getMemory(address x){ +byte GetMemory(address x){ switch(x) { // I opted to make the kbd return successfully at all times for the sake of simplicity. - // This is not "accurate" behavior however. + // This is not technically "accurate" behavior however. case KBD: - return 0b10000000 | ToAppleASCII(UserInput()); + return 0b10000000 | ToAppleAscii(UserInput()); case KBD_CR: case DSP: return 0b10000000; + default: + return Memory[x]; } - return Memory[x]; } -void setMemory(address x, byte y){ +void SetMemory(address x, byte y){ Memory[x] = y; } |