30 lines
568 B
ArmAsm
30 lines
568 B
ArmAsm
;; BASIC Cold start entry point
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;; Compute's Mapping the 64 p211
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basic_cold_start:
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;; Setup BASIC vectors at $0300
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;; Initialise interpretor
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;; Print start up message
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ldy #>startup_message
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lda #<startup_message
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jsr print_string
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;; jump into warm start loop
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jmp basic_warm_start
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startup_message:
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;; Clear the screen
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.byte $93
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;; Vertical bars in different colours
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.byte $1C,$B4
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.byte $9E,$B5
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.byte $1E,$A1
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;; <RVS><WHITE>MEGA<NORMAL>BASIC
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.byte $12,$05,$4D,$45,$47,$41,$92,$42,$41,$53,$49,$43
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;; carriage return at end
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.byte $0D
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.byte 0
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