pce-common: fix pce_joypad_read() multitap support (#249)

asiekierka · web-flow · commit cd3055eeb6c8 · 2023-11-25T08:43:18.000-08:00
diff --git a/mos-platform/pce-common/libpce/src/joypad.c b/mos-platform/pce-common/libpce/src/joypad.c
@@ -17,8 +17,8 @@ uint8_t pce_joypad_wr(uint8_t value) {
 }
 
 __attribute__((noinline)) uint8_t pce_joypad_next(void) {
-  uint8_t low = pce_joypad_wr(0);
   uint8_t high = pce_joypad_wr(JOYPAD_SEL);
+  uint8_t low = pce_joypad_wr(0);
   return (low & 0xF) | (high << 4);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -17,8 +17,8 @@ uint8_t pce_joypad_wr(uint8_t value) {`
`17`	`17`	`}`
`18`	`18`
`19`	`19`	`__attribute__((noinline)) uint8_t pce_joypad_next(void) {`
`20`		`- uint8_t low = pce_joypad_wr(0);`
`21`	`20`	`uint8_t high = pce_joypad_wr(JOYPAD_SEL);`
	`21`	`+ uint8_t low = pce_joypad_wr(0);`
`22`	`22`	`return (low & 0xF) \| (high << 4);`
`23`	`23`	`}`
`24`	`24`