mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-25 05:29:34 +00:00
mode7: play music at 25Hz
sounds horrible for now
This commit is contained in:
parent
1de05f88b9
commit
d935782bfd
@ -74,14 +74,15 @@ mockingboard_setup:
|
||||
sta $C40D ; IFR: 1100, enable interrupt on timer one oflow
|
||||
sta $C40E ; IER: 1100, enable timer one interrupt
|
||||
|
||||
lda #$E7
|
||||
lda #$40
|
||||
sta $C404 ; write into low-order latch
|
||||
lda #$4f
|
||||
lda #$9c
|
||||
sta $C405 ; write into high-order latch,
|
||||
; load both values into counter
|
||||
; clear interrupt and start counting
|
||||
|
||||
; 4fe7 / 1e6 = .020s, 50Hz
|
||||
; 9c40 / 1e6 = .040s, 25Hz
|
||||
|
||||
|
||||
;============================
|
||||
|
Loading…
Reference in New Issue
Block a user