1 files changed, 7 insertions, 46 deletions

diff --git a/cpu.c b/cpu.c
index 7ae0867..4528ff5 100644
--- a/cpu.c
+++ b/cpu.c
@@ -138,15 +138,12 @@ opcode_arg(enum addressing_mode mode)
                 break;
         case AM_ABS:
                 val = peek16(arg);
-                printf("$%04X", arg);
                 break;
         case AM_ABS_X:
                 val = peek16(arg + regs.x);
-                printf("$%04X", arg);
                 break;
         case AM_ABS_Y:
                 val = peek16(arg + regs.y);
-                printf("$%04X", arg);
                 break;
         case AM_IND_X:
                 val = peek(peek((arg + regs.x) % 256) + peek((arg + regs.x + 1) % 256) * 256);
@@ -155,7 +152,7 @@ opcode_arg(enum addressing_mode mode)
                 val = peek(peek(arg) + peek((arg + 1) % 256) * 256 + regs.y);
                 break;
         default:
-                fprintf(stderr, "INVALID ADDRESSING MODE\n");
+                fprintf(stderr, "INVALID ADDRESSING MODE %i\n", mode);
                 abort();
         }
 
@@ -196,6 +193,9 @@ opcode_mem(enum addressing_mode mode)
         case AM_ABS_Y:
                 val = arg + regs.y;
                 break;
+        case AM_IND:
+                val = peek16(arg);
+                break;
         case AM_IND_X:
                 val = peek((arg + regs.x) % 256) + peek((arg + regs.x + 1) % 256) * 256;
                 break;
@@ -754,7 +754,8 @@ tya(void)
 static void
 interpret(void)
 {
-        uint8_t opcode, cycles_;
+        uint8_t opcode;
+        uint32_t cycles_;
 
         for (;;) {
                 opcode = peek(regs.pc++);
@@ -793,11 +794,6 @@ interpret(void)
                         cycles += 4;
                         printf("ADC");
                         break;
-                case 0x72:
-                        adc(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("ADC");
-                        break;
                 case 0x61:
                         adc(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -838,11 +834,6 @@ interpret(void)
                         cycles += 4;
                         printf("AND");
                         break;
-                case 0x32:
-                        and(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("AND");
-                        break;
                 case 0x21:
                         and(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -998,11 +989,6 @@ interpret(void)
                         cycles += 4;
                         printf("CMP");
                         break;
-                case 0xd2:
-                        cmp(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("CMP");
-                        break;
                 case 0xc1:
                         cmp(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -1103,11 +1089,6 @@ interpret(void)
                         cycles += 4;
                         printf("EOR");
                         break;
-                case 0x52:
-                        eor(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("EOR");
-                        break;
                 case 0x41:
                         eor(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -1154,7 +1135,7 @@ interpret(void)
                         printf("JMP");
                         break;
                 case 0x6c:
-                        jmp(opcode_arg(AM_IND));
+                        jmp(opcode_mem(AM_IND));
                         cycles += 6;
                         printf("JMP");
                         break;
@@ -1198,11 +1179,6 @@ interpret(void)
                         cycles += 4;
                         printf("LDA");
                         break;
-                case 0xb2:
-                        lda(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("LDA");
-                        break;
                 case 0xa1:
                         lda(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -1323,11 +1299,6 @@ interpret(void)
                         cycles += 4;
                         printf("ORA");
                         break;
-                case 0x12:
-                        ora(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("ORA");
-                        break;
                 case 0x01:
                         ora(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -1448,11 +1419,6 @@ interpret(void)
                         cycles += 4;
                         printf("SBC");
                         break;
-                case 0xf2:
-                        sbc(opcode_arg(AM_IND));
-                        cycles += 5;
-                        printf("SBC");
-                        break;
                 case 0xe1:
                         sbc(opcode_arg(AM_IND_X));
                         cycles += 6;
@@ -1503,11 +1469,6 @@ interpret(void)
                         cycles += 6;
                         printf("STA");
                         break;
-                case 0x92:
-                        sta(opcode_mem(AM_IND));
-                        cycles += 6;
-                        printf("STA");
-                        break;
                 case 0x81:
                         sta(opcode_mem(AM_IND_X));
                         cycles += 7;