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Merge pull request #4 from groessler/something_to_pull

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c64: fix latency
This commit is contained in:
Oliver Schmidt
2017-10-01 20:12:52 +02:00
committed by GitHub
parent 8b3c53ee67 fc4a2aab96
commit 6ae6037549
1 changed files with 10 additions and 0 deletions
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10
drivers/c64input.s
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@@ -25,8 +25,18 @@ get_key:
@loop: @loop:
jsr get_key_if_available jsr get_key_if_available
bcc @loop bcc @loop
@wait_no_cursor:
sei
ldy $cf ; cursor currently displayed?
beq @done ; no
ldy #1 ; yes, wait longer
sty $cd ; set cursor "countdown" counter to low value, fixes typing latency
cli
bne @wait_no_cursor ; jump always
@done:
ldy #1 ldy #1
sty $cc ; cursor off sty $cc ; cursor off
cli
rts rts
; use C64 Kernel ROM function to read a key ; use C64 Kernel ROM function to read a key