38 lines
945 B
C
38 lines
945 B
C
#include <stdio.h>
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#include <proto/exec.h>
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#include <exec/memory.h>
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#define RAM_SIZE (16)
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int main(void) {
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void *FastRAM, *MoreFastRAM;
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char wow;
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FastRAM = AllocMem(RAM_SIZE, MEMF_FAST);
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// this will happen on a machine that has no fast ram at all installed
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if (FastRAM == 0) {
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printf("We couldn't allocate Fast RAM. Does this machine have any?\n");
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return 1;
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}
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((char*)FastRAM)[0]=10;
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printf("Memory location: %d\n", FastRAM);
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printf("Data at byte 0: %d\n",((char*)FastRAM)[0]);
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printf("Now, run NoFastMem, then return here and hit Enter\n");
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wow = getc(stdin);
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MoreFastRAM = AllocMem(RAM_SIZE, MEMF_FAST);
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printf("Attempt to allocate more RAM as Fast RAM: %d\n", MoreFastRAM);
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if (MoreFastRAM > 0) {
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printf("We got more RAM, but it's very likely Chip RAM\n");
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FreeMem(MoreFastRAM, RAM_SIZE);
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}
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printf("Data still at byte 0: %d\n", ((char*)FastRAM)[0]);
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FreeMem(FastRAM, RAM_SIZE);
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}
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