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https://github.com/captain-amygdala/pistorm.git
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45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
#include <exec/types.h>
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// Packet types that are sent across the physical channel.
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#define PKT_DRIVER_STARTED 1
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#define PKT_DRIVER_SHUTTING_DOWN 2
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#define PKT_SETTINGS 3
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#define PKT_CONNECT 4
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#define PKT_CONNECT_RESPONSE 5
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#define PKT_DATA 6
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#define PKT_EOS 7
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#define PKT_RESET 8
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// Events that are communicated via IRQ from Amiga to Raspberry.
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#define R_EVENT_A2R_TAIL 1
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#define R_EVENT_R2A_HEAD 2
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#define R_EVENT_STARTED 4
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// Events that are communicated from Raspberry to Amiga.
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#define A_EVENT_R2A_TAIL 1
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#define A_EVENT_A2R_HEAD 2
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#define COM_AREA_BASE 0xe90000
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#define PISTORM_BASE 0xc00000
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#define PISTORM_SIZE (3*512*1024)
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// The communication area, used to create the physical channel.
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struct ComArea
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{
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volatile UBYTE a_events;
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volatile UBYTE a_enable;
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volatile UBYTE r_events;
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volatile UBYTE r_enable;
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volatile UBYTE a2r_tail;
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volatile UBYTE r2a_head;
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volatile UBYTE r2a_tail;
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volatile UBYTE a2r_head;
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UBYTE a2r_buffer[256];
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UBYTE r2a_buffer[256];
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};
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extern struct ComArea *ca;
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