From 6df20df5fc97c51a5f23067018ff0ed42e774ef6 Mon Sep 17 00:00:00 2001 From: Jarno Lehtinen Date: Tue, 5 Apr 2022 22:26:15 +0300 Subject: [PATCH] Update README.md --- C64_4joy_adapter/README.md | 1 + 1 file changed, 1 insertion(+) diff --git a/C64_4joy_adapter/README.md b/C64_4joy_adapter/README.md index e22aafa..64fddcf 100644 --- a/C64_4joy_adapter/README.md +++ b/C64_4joy_adapter/README.md @@ -32,6 +32,7 @@ sei - out can write from register to io - only one io/data address space access within one instruction? - lds/sts takes 2 cycles and in/out takes 1 cycle? ldi takes 1 cycle? +- lds/sts: \_SFR_MEM_ADDR(GPIOR2), in/out: \SFR_IO_ADDR(GPIOR0) ## avr asm - http://www.nongnu.org/avr-libc/user-manual/inline_asm.html