mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Codex
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
#include "psx_memory.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
static int failures;
|
|
|
|
static void check(int condition, const char *name) {
|
|
if (condition) {
|
|
printf("PASS %s\n", name);
|
|
} else {
|
|
fprintf(stderr, "FAIL %s\n", name);
|
|
failures++;
|
|
}
|
|
}
|
|
|
|
int main(void) {
|
|
uint32_t off = 0xFFFFFFFFu;
|
|
|
|
check(psx_ram_resolve(0x80000000u, 4u, &off) && off == 0u,
|
|
"KSEG0 aliases physical RAM");
|
|
check(psx_ram_resolve(0xA0000100u, 4u, &off) && off == 0x100u,
|
|
"KSEG1 aliases physical RAM");
|
|
check(!psx_ram_resolve(0x00800000u, 4u, &off),
|
|
"first byte beyond DRAM decode is rejected");
|
|
check(!psx_ram_resolve(0x1F801000u, 4u, &off),
|
|
"MMIO is never mistaken for DRAM");
|
|
check(!psx_ram_resolve(PSX_MAIN_RAM_BYTES - 2u, 4u, &off),
|
|
"cross-geometry word is rejected");
|
|
|
|
#if PSX_MAIN_RAM_BYTES == PSX_MAIN_RAM_RETAIL_BYTES
|
|
check(psx_ram_canonical_offset(0x80612340u) == 0x00012340u,
|
|
"retail canonicalization folds KSEG0 mirrors");
|
|
check(psx_ram_resolve(0x00212340u, 4u, &off) && off == 0x00012340u,
|
|
"retail geometry folds the second mirror");
|
|
check(psx_ram_resolve(0x807FFFFCu, 4u, &off) && off == 0x001FFFFCu,
|
|
"retail geometry folds the fourth mirror top");
|
|
#elif PSX_MAIN_RAM_BYTES == PSX_MAIN_RAM_EXPANDED_BYTES
|
|
check(psx_ram_canonical_offset(0x80612340u) == 0x00612340u,
|
|
"expanded canonicalization preserves all decoded address bits");
|
|
check(psx_ram_resolve(0x00212340u, 4u, &off) && off == 0x00212340u,
|
|
"expanded geometry uniquely decodes the second bank");
|
|
check(psx_ram_resolve(0x807FFFFCu, 4u, &off) && off == 0x007FFFFCu,
|
|
"expanded geometry uniquely decodes the eighth MiB top");
|
|
#endif
|
|
|
|
return failures ? 1 : 0;
|
|
}
|