Revision 48
Added by markw over 11 years ago
| firmware/freeze.c | ||
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#include "regs.h"
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unsigned char store_portb;
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unsigned volatile int * store_mem;
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unsigned volatile char * store_custom;
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unsigned volatile char * store_mem;
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unsigned volatile char * custom_mirror;
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unsigned volatile char * atari_base;
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void freeze_init(void * memory)
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{
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store_mem = memory;
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store_custom = memory;
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store_mem = (unsigned volatile char *)memory;
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custom_mirror = (unsigned volatile char *)atari_regmirror;
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atari_base = (unsigned volatile char *)atari_regbase;
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| ... | ... | |
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store_portb = *atari_portb;
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{
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//gtia
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for (i=0xd000; i!=0xd01f; i++)
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for (i=0xd000; i!=0xd020; i++)
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{
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store_custom[i] = custom_mirror[i];
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store_mem[i] = custom_mirror[i];
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atari_base[i] = 0;
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}
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//pokey1/2
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for (i=0xd200; i!=0xd21f; i++)
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for (i=0xd200; i!=0xd220; i++)
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{
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store_custom[i] = custom_mirror[i];
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store_mem[i] = custom_mirror[i];
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atari_base[i] = 0;
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}
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//antic
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for (i=0xd400; i!=0xd40f; i++)
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for (i=0xd400; i!=0xd410; i++)
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{
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store_custom[i] = custom_mirror[i];
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store_mem[i] = custom_mirror[i];
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atari_base[i] = 0;
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}
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}
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| ... | ... | |
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// Copy 64k ram to sdram
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// Atari screen memory...
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for (i=0x0; i!=0x3400; ++i)
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for (i=0x0; i!=0xd000; ++i)
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{
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store_mem[i] = atari_base[i];
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}
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for (i=0x3600; i!=0x4000; ++i)
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for (i=0xd800; i!=0x10000; ++i)
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{
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store_mem[i] = atari_base[i];
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}
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//Clear, except dl (first 0x40 bytes)
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for (i=0x40; i!=1024; i++)
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for (i=0x9c40; i!=(0x9c40+1024); i++)
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{
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atari_base[i] = 0;
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}
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| ... | ... | |
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0x70,
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0x41,0x00,0x9c
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};
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int end=0x9c00+sizeof(dl);
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for (i=0x9c00; i!=end; ++i)
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int j = 0;
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for (i=0x9c00; j!=sizeof(dl); ++i,++j)
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{
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atari_base[i] = dl[i];
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atari_base[i] = dl[j];
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}
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// point antic at my display list
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| ... | ... | |
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int i;
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// Restore memory
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for (i=0x0; i!=0x3400; ++i)
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for (i=0x0; i!=0xd000; ++i)
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{
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atari_base[i] = store_mem[i];
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}
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for (i=0x3600; i!=0x4000; ++i)
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for (i=0xd800; i!=0x10000; ++i)
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{
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atari_base[i] = store_mem[i];
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}
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| ... | ... | |
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// Restore custom chips
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{
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//gtia
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for (i=0xd000; i!=0xd01f; i++)
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for (i=0xd000; i!=0xd020; i++)
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{
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atari_base[i] = store_custom[i];
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atari_base[i] = store_mem[i];
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}
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//pokey1/2
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for (i=0xd200; i!=0xd21f; i++)
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for (i=0xd200; i!=0xd220; i++)
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{
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atari_base[i] = store_custom[i];
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atari_base[i] = store_mem[i];
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}
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//antic
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for (i=0xd400; i!=0xd40f; i++)
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for (i=0xd400; i!=0xd410; i++)
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{
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atari_base[i] = store_custom[i];
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atari_base[i] = store_mem[i];
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}
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}
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Also available in: Unified diff
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