Jeff Epler
7b8b26f0e0
This makes clicking "show notes" in the "Addresses" stack of HyperCardBootSystem7.img succeed. It also allows `play "Boing"` to work, but not `play "Boing" "a c e g"`. It also makes running on RP2350 really, really slow. It also makes glider come up complaining of a missing math co-processor(!?)
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/*
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* Copyright 2024 Matt Evans
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef VIA_H
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#define VIA_H
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#include <stdio.h>
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/* Callbacks for various VIA events: */
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struct via_cb {
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void (*ra_change)(uint8_t val);
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void (*rb_change)(uint8_t val);
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uint8_t (*ra_in)(void);
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uint8_t (*rb_in)(void);
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void (*sr_tx)(uint8_t val);
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void (*irq_set)(int status);
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};
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void via_init(struct via_cb *cb);
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void via_write(unsigned int address, uint8_t data);
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uint8_t via_read(unsigned int address);
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void via_tick(int cycles);
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int via_limit_cycles(int cycles);
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/* Trigger an event on CA1 or CA2: */
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void via_caX_event(int ca);
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void via_sr_rx(uint8_t val);
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#endif
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