emu_nes

commit 454276a50c5843e3401f9bc54d80cb7dda40b782
parent e07d5917a1625e207d1ba96b7e0d1e1c493040b2
Author: vin <git@vineetk.net>
Date:   Mon, 10 Jun 2024 12:54:05 +0530

implement sta, stx, sty

Diffstat:
M
cpu.c
 | 
40
++++++++++++++++++++--------------------

1 file changed, 20 insertions(+), 20 deletions(-)
diff --git a/cpu.c b/cpu.c
@@ -559,21 +559,21 @@ sei(uint8_t arg)
 }
 
 static void
-sta(uint8_t arg)
+sta(uint16_t mem)
 {
-/* TODO: complete this */
+	memwrite(mem, regs.a);
 }
 
 static void
-stx(uint8_t arg)
+stx(uint16_t mem)
 {
-/* TODO: complete this */
+	memwrite(mem, regs.x);
 }
 
 static void
-sty(uint8_t arg)
+sty(uint16_t mem)
 {
-/* TODO: complete this */
+	memwrite(mem, regs.y);
 }
 
 static void
@@ -1219,59 +1219,59 @@ interpret(void)
 			cycles += 2;
 			break;
 		case 0x85:
-			sta(opcode_arg(AM_ZP));
+			sta(opcode_mem(AM_ZP));
 			cycles += 4;
 			break;
 		case 0x95:
-			sta(opcode_arg(AM_ZP_X));
+			sta(opcode_mem(AM_ZP_X));
 			cycles += 5;
 			break;
 		case 0x8d:
-			sta(opcode_arg(AM_ABS));
+			sta(opcode_mem(AM_ABS));
 			cycles += 5;
 			break;
 		case 0x9d:
-			sta(opcode_arg(AM_ABS_X));
+			sta(opcode_mem(AM_ABS_X));
 			cycles += 6;
 			break;
 		case 0x99:
-			sta(opcode_arg(AM_ABS_Y));
+			sta(opcode_mem(AM_ABS_Y));
 			cycles += 6;
 			break;
 		case 0x92:
-			sta(opcode_arg(AM_IND));
+			sta(opcode_mem(AM_IND));
 			cycles += 6;
 			break;
 		case 0x81:
-			sta(opcode_arg(AM_IND_X));
+			sta(opcode_mem(AM_IND_X));
 			cycles += 7;
 			break;
 		case 0x91:
-			sta(opcode_arg(AM_IND_Y));
+			sta(opcode_mem(AM_IND_Y));
 			cycles += 7;
 			break;
 		case 0x86:
-			stx(opcode_arg(AM_ZP));
+			stx(opcode_mem(AM_ZP));
 			cycles += 4;
 			break;
 		case 0x96:
-			stx(opcode_arg(AM_ZP_Y));
+			stx(opcode_mem(AM_ZP_Y));
 			cycles += 5;
 			break;
 		case 0x8e:
-			stx(opcode_arg(AM_ABS));
+			stx(opcode_mem(AM_ABS));
 			cycles += 5;
 			break;
 		case 0x84:
-			sty(opcode_arg(AM_ZP));
+			sty(opcode_mem(AM_ZP));
 			cycles += 4;
 			break;
 		case 0x94:
-			sty(opcode_arg(AM_ZP_X));
+			sty(opcode_mem(AM_ZP_X));
 			cycles += 5;
 			break;
 		case 0x8c:
-			sty(opcode_arg(AM_ABS));
+			sty(opcode_mem(AM_ABS));
 			cycles += 5;
 			break;
 		case 0xaa: