22 lines
1.1 KiB
Plaintext
22 lines
1.1 KiB
Plaintext
{-----------------------------------------------------------------------+
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| "Blinkenline" |
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| A tiny program to display the system variables as pixels in the top |
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| row and then halt the program. |
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| Can be used as a stop screen for failed ROM version checks. |
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+-----------------------------------------------------------------------}
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gcl0x
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$100 { Load $0100 into vAC. The low byte of vAC is set to $00. }
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_vAC. { Put the contents of the low byte of vAC ($00) at the adress }
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{ pointed to by vAC ($100). This sets the page of the first }
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{ screenline to 0 (the variables page). }
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do loop { Halt the program. }
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