4cade/src/demo/pacman.a

;license:MIT
;(c) 2021-2022 by Frank M., qkumba

!cpu 6502
!to "build/DEMO/PACMAN#060300",plain
*=$300

         !source "src/constants.a"   ; no code in these
         !source "src/macros.a"

         +ENABLE_ACCEL_LC
         +LOAD_XSINGLE title

         +NEW_RESET_VECTOR $280

         lda   #$60
         sta   $813
         jsr   $800       ; decompress

         +TEST_TEXT_PAGE_2

         lda   #$80
         sta   $103F
         lda   #2
         sta   $104A      ; reset/IRQ vector patch

         ldx   #3-1
-        lda   patch,x
         sta   $027C,x
         sta   $22F9,x    ; (later moved to $52F9)
         sta   $3F7C,x    ; (later moved to $6F7C)
         sta   $5C0B,x    ; (later moved to $8C0B)
         lda   patch2,x
         sta   $18A6,x    ; (later moved to $48A6)
         lda   patch3,x
         sta   $22F1,x    ; (later moved to $52F1)
         dex
         bpl   -

         lda   #$EA
         sta   $22F1+3    ; set exits

         +DISABLE_ACCEL

         jmp   $1000

patch2   !byte $4C,$CD,$48
patch    !byte $4C,$00,$01
patch3   !byte $30,$06,$EA

title    !byte x_e-x_b
x_b      !text "PACMAN"
x_e

!if * > $3F0 {
  !error "code is too large, ends at ", *
}