2021-02-08 20:17:50 +00:00
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/*
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Copyright (c) 2021 Devine Lu Linvega
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Permission to use, copy, modify, and distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE.
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*/
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2021-04-20 21:30:26 +00:00
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#define PAGE_PROGRAM 0x0100
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2023-01-01 21:19:40 +00:00
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/* clang-format off */
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2023-01-01 19:31:14 +00:00
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2023-03-01 18:35:42 +00:00
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#define POKE16(d, v) { (d)[0] = (v) >> 8; (d)[1] = (v); }
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#define PEEK16(d) ((d)[0] << 8 | (d)[1])
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2022-01-03 21:23:57 +00:00
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/* clang-format on */
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2023-03-01 18:35:42 +00:00
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typedef unsigned char Uint8;
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typedef signed char Sint8;
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typedef unsigned short Uint16;
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typedef signed short Sint16;
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typedef unsigned int Uint32;
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2021-02-08 20:16:39 +00:00
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typedef struct {
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2023-01-13 04:35:42 +00:00
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Uint8 dat[255], ptr;
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2021-02-15 18:12:44 +00:00
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} Stack;
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2021-02-08 20:16:39 +00:00
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2021-03-22 21:22:06 +00:00
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typedef struct Uxn {
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2023-01-01 20:21:30 +00:00
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Uint8 *ram, *dev;
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2023-01-01 21:19:40 +00:00
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Stack *wst, *rst;
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2023-01-01 20:04:54 +00:00
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Uint8 (*dei)(struct Uxn *u, Uint8 addr);
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2023-03-04 04:37:43 +00:00
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void (*deo)(struct Uxn *u, Uint8 addr);
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2021-02-08 22:18:01 +00:00
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} Uxn;
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2021-02-08 20:16:39 +00:00
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2023-03-05 18:44:23 +00:00
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/* required functions */
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2023-01-01 20:04:54 +00:00
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2023-03-05 18:44:23 +00:00
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extern Uint8 uxn_dei(Uxn *u, Uint8 addr);
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extern void uxn_deo(Uxn *u, Uint8 addr);
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extern int uxn_halt(Uxn *u, Uint8 instr, Uint8 err, Uint16 addr);
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/* built-ins */
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int uxn_boot(Uxn *u, Uint8 *ram);
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int uxn_eval(Uxn *u, Uint16 pc);
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