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z80
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This commit is contained in:
Pedro de Oliveira 2014-08-14 19:24:10 +01:00
parent fd4a4ccf49
commit b180fcc7e3
1 changed files with 4 additions and 2 deletions
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6
zxbrainfuck/main.asm
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@ -4,7 +4,7 @@ org $7530
; System variables ; System variables
tv_flag equ $5c3c ; TV flags variable tv_flag equ $5c3c ; TV flags variable
last_k equ $5c08 ; Last pressed key last_k equ $5c08 ; Last pressed key
clear_screen equ $0daf ; Rom routine to clear the screen clr_screen equ $0daf ; Rom routine to clear the screen
; Brainfuck opcodes ; Brainfuck opcodes
OP_INC_DP equ ">" ; $3e - 62 OP_INC_DP equ ">" ; $3e - 62
@ -58,7 +58,7 @@ start
ld (tv_flag), a ; Enables rst $10 output to the TV ld (tv_flag), a ; Enables rst $10 output to the TV
push bc ; Save BC on the stack push bc ; Save BC on the stack
call clear_screen call clr_screen ; Clear the screen with a ROM routine
call clear_memory ; Set all memory cells to 0 call clear_memory ; Set all memory cells to 0
@ -89,6 +89,8 @@ end_main
; ------------------------------------- ; -------------------------------------
; Sets all BF memory cells to 0
; Starts clearing at the end
clear_memory clear_memory
ld bc, memory_size ld bc, memory_size
clear_memory_loop clear_memory_loop