32 lines
832 B
ArmAsm
32 lines
832 B
ArmAsm
;; Function defined on pp272-273 of C64 Programmers Reference Guide
|
|
;; Compute's Mapping the 64 p215
|
|
cint:
|
|
;; Set up default IO values (Compute's Mapping the 64 p215)
|
|
lda #$1b ; Enable text mode
|
|
sta $d011
|
|
lda #$c8 ; 40 column etc
|
|
sta $d016
|
|
|
|
;; Initialise cursor blink flags (Compute's Mapping the 64 p215)
|
|
|
|
;; Set keyboard decode vector (Compute's Mapping the 64 p215)
|
|
|
|
;; Set key repeat delay (Compute's Mapping the 64 p215)
|
|
|
|
;; Set key frequency counters (Compute's Mapping the 64 p215)
|
|
|
|
;; Set current colour for text (Compute's Mapping the 64 p215)
|
|
lda #$0e ; light blue by default
|
|
sta $0286
|
|
|
|
;; Set maximum keyboard buffer size (Compute's Mapping the 64 p215)
|
|
lda #10
|
|
sta key_buffer_size
|
|
|
|
;; Fallthrough/jump to screen clear routine (Compute's Mapping the 64 p215)
|
|
;; jmp clear_screen
|
|
|
|
|
|
rts
|
|
|