Clearing the z80 keyboard buffer before starting the OS boot loader

2023-10-30 02:06:58 +10:00 · 2023-10-30 02:06:58 +10:00 · 9226260e35
commit 9226260e35
parent e7b8753a9e
3 changed files with 4 additions and 5 deletions
--- a/2
+++ b/2
@ -1 +1 @@
-Subproject commit 374477690571809e7318bd4279bc7da120b6c492
+Subproject commit 2308a92341b8cf17b710c05123feec4d4dc55609
--- a/src/bios/exp/EXP.asm
+++ b/src/bios/exp/EXP.asm
@ -1035,14 +1035,12 @@ PORTS_INIT:
 .clean_kbd_buf:
 	IN	A,(Z84.SIO.Ch_A.Ctrl)
 	AND	1
-	JR	Z,1F
+	RET	Z
 	IN	A,(Z84.SIO.Ch_A.Data)
 	JR	.clean_kbd_buf
-1:	;exit from .clean_kbd_buf
+;	RET	PORTS_INIT.clean_kbd_buf
 ;---------------------------------------

-	RET
-
 ;-----------------------------------------------------------------------;


--- a/src/bios/rom/SETUP/MAIN.asm
+++ b/src/bios/rom/SETUP/MAIN.asm
@ -866,6 +866,7 @@ RECOVERYstart:

 PrepareToBOOT:
        CALL	INT_OFF
+	CALL	PORTS_INIT.clean_kbd_buf
 	CALL	G_VALUE
 	LD	B,0
        ;   FDD