X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=ld45_start_nothing;a=blobdiff_plain;f=src%2Fkeyb.asm;h=b953474240785f3840f0b86f45f084c5cc719454;hp=c41a2b6316a44afa59ebc798725d8fd7e7d59806;hb=033d820931e5930051b9df6a0c4a8183aa9299ee;hpb=371bbe72cccdd5c40d5118bd0417fab062f3699a

diff --git a/src/keyb.asm b/src/keyb.asm
index c41a2b6..b953474 100644
--- a/src/keyb.asm
+++ b/src/keyb.asm
@@ -38,17 +38,14 @@ kbintr:
 	; keystate[keycode] address in ebx
 	xor ebx, ebx
 	mov bl, al
+	and bl, 07fh
 	add ebx, keystate
 
-	; determine if it's a press or release
-	test al, 80h
-	jz .press
-	; key release
-	mov byte [ebx], 0
-	jmp .eoi
-.press: ; key press
-	mov byte [ebx], 1
-
+	; determine if it's a press or release (high bit set on release)
+	rol al, 1
+	and al, 1
+	xor al, 1
+	mov byte [ebx], al
 .eoi:
 	cli
 	end_of_irq KB_IRQ