27 lines
560 B
ArmAsm
27 lines
560 B
ArmAsm
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//
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// Helper routine for JiffyDOS detection
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//
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// The standard parallel cable (used by SpeedDOS, DolphinDOS 2, etc.) connects the following UserPort lines:
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// - PB0-PB7 - CIA2_PRB ($DD01), CIA #2 port B
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// - PC2, FLAG2 - CIA2_ICR ($DD0D), CIA #2 handshaking line
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//
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// See:
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// - http://sta.c64.org/cbmpar41c.html
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// - http://sta.c64.org/cbmpar71c.html
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// - Commodore 64 Programers Referencee Guide, pages 360-361, 429
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// - Computes Mapping the C64, page 183
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#if CONFIG_IEC_DOLPHINDOS
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dolphindos_detect:
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panic #$00
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#endif // CONFIG_IEC_DOLPHINDOS
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