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45 lines
970 B
Plaintext
45 lines
970 B
Plaintext
byte vic_border @ 53280
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//
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// The constraints on these 2 vectors are kind-of sort-of big fibs.
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// They're only written this way so they can be compatible with our
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// routine. In fact, CINV is an interrupt routine where it doesn't
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// really matter what you trash anyway, because all registers were
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/// saved by the caller (the KERNAL) and will be restored by the end
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// of the code of the saved origin cinv routine that we goto.
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//
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// I wonder if this could be arranged somehow to be less fibby, in
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// a future version of SixtyPical.
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//
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vector cinv
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inputs vic_border
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outputs vic_border
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trashes z, n
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@ 788
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vector save_cinv
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inputs vic_border
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outputs vic_border
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trashes z, n
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routine our_cinv
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inputs vic_border
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outputs vic_border
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trashes z, n
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{
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inc vic_border
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goto save_cinv
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}
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routine main
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inputs cinv
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outputs cinv, save_cinv
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trashes a, n, z
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{
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with interrupts off {
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copy cinv, save_cinv
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copy our_cinv, cinv
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}
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}
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