; Timer that's incremented every 64 cycles ; Initializes timer for use by sync_tima_64 init_tima_64: wreg TMA,0 wreg TAC,$07 ret ; Synchronizes to timer ; Preserved: AF, BC, DE, HL sync_tima_64: push af push hl ; Coarse ld hl,TIMA ld a,0 ld (hl),a - or (hl) jr z,- ; Fine - delay 65-12 xor a ld (hl),a or (hl) delay 4 jr z,- pop hl pop af ret ; Read from this to get count that's incremented ; every 64 cycles. .define tima_64 TIMA