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add a viewport in the front spike

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Brooke Vibber 2024-12-30 14:22:03 -08:00
parent 3bd9b1ac31
commit 9b7f6b8937
1 changed files with 15 additions and 0 deletions
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15
mandel.s
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@ -116,6 +116,13 @@ KEY_RIGHT = $87
KEY_1 = $1f KEY_1 = $1f
KEY_2 = $1e KEY_2 = $1e
KEY_3 = $1a KEY_3 = $1a
KEY_4 = 24
KEY_5 = 29
KEY_6 = 27
KEY_7 = 51
KEY_8 = 53
KEY_9 = 48
KEY_0 = 50
.struct float48 .struct float48
exponent .byte exponent .byte
@ -279,16 +286,19 @@ viewport_zoom:
.byte 1 .byte 1
.byte 6 .byte 6
.byte 8 .byte 8
.byte 6
viewport_ox: viewport_ox:
.word $0000 .word $0000
.word $f110 .word $f110
.word $f110 .word $f110
.word $e400
viewport_oy: viewport_oy:
.word $0000 .word $0000
.word $fb60 .word $fb60
.word $fbe0 .word $fbe0
.word $0000
; 2 + 9 * byte cycles ; 2 + 9 * byte cycles
.macro add bytes, dest, arg1, arg2 .macro add bytes, dest, arg1, arg2
@ -1279,6 +1289,8 @@ skip_luma:
beq two beq two
cpy #KEY_3 cpy #KEY_3
beq three beq three
cpy #KEY_4
beq four
skip_char: skip_char:
lda #0 lda #0
@ -1316,6 +1328,9 @@ two:
jmp load_key_viewport jmp load_key_viewport
three: three:
ldx #2 ldx #2
jmp load_key_viewport
four:
ldx #3
; fall through ; fall through
load_key_viewport: load_key_viewport:
jsr load_viewport jsr load_viewport