bslathi19/super6502
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add interrupt based timer and test code

Browse Source
This commit is contained in:
Byron Lathi
2023-01-03 18:20:34 -05:00
parent 1ac3bdf614
commit 32a78a4aff
10 changed files with 639 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
hw/efinix_fpga/test_programs/timer.s
View File

@@ -2,13 +2,21 @@
LEDS = $efff
TIMER_BASE = $eff8
TIMER_DIVISOR = 5
TIMER_DIVISOR = 2
TIMER_CL = 0
TIMER_LL = 0
TIMER_CH = 1
TIMER_LH = 1
TIMER_STATUS = 3
TIMER_OLD = $10
main:
lda #$ff
lda #$01
sta TIMER_BASE+TIMER_DIVISOR
lda #$00
sta TIMER_BASE+TIMER_LH
lda #$0F
sta TIMER_BASE+TIMER_LL
lda TIMER_BASE
sta TIMER_OLD
stz LEDS