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36 lines
2.3 KiB
Plaintext
36 lines
2.3 KiB
Plaintext
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; Demo 1: HELLO, WORLDS! / 2018 hxlnt
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; Inspired by Adam Trionfo's Hello World
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; http://www.ballyalley.com/ml/ml_homebrew/helloworld/hello.asm
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; Assemble with Zmac 1.3
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; From: https://github.com/hxlnt/astrocade
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INCLUDE "hvglib.h" ; Include HVGLIB library
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ORG FIRSTC ; Initialize at beginning of cartridge ROM area
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DB $55 ; ... with the code for a normal menued cartridge
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DW MENUST ; Initialize menu
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DW PrgName ; ... with string at PrgName
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DW PrgStart ; ... such that selecting the program enters PrgStart
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PrgName: DB "HELLO, WORLDS!"; String
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DB 0 ; ... which must be followed by 0
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PrgStart: DI ; Disable interrupts
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SYSTEM INTPC ; Begin interpreter mode
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DO SETOUT ; Set output ports
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DB 100*2 ; ... with VBLANK line set to line 100
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DB 112/4 ; ... with color boundary 112 pixels from the left of the screen
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DB 00001000b ; ... with screen interrupts reenabled
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DO COLSET ; Set color palettes
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DW Palettes ; ... with the values at Palettes
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DO FILL ; Set background fill
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DW NORMEM ; ... starting at the beginning of screen RAM
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DW 100*BYTEPL ; ... and going for 100 lines
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DB 00010010b ; ... with a fill pattern of three different colored pixels
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DO STRDIS ; Set string display
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DB 0 ; ... starting 0 pixels from the left of the screen
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DB 32 ; ... and 32 pixels from the top of the screen
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DB 00001100b ; ... with no enlargement, foreground color = 11, background color = 00
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DW PrgName ; ... to show string at PrgName
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EXIT ; Exit interpreter mode
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Loop: JP Loop ; Play infinite loop
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Palettes: DB $BF,$00,$00,$00 ; Left color palette (11b, 10b, 01b, 00b)
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DB $E7,$9A,$39,$19 ; Right color palette (11b, 10b, 01b, 00b)
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