mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-28 10:59:16 -04:00
Alex Vanderveen
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
#include "mod_memory.h"
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#include "psx_ram.h"
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#include <stdio.h>
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static int failures;
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uint32_t g_psx_ram_size = PSX_RAM_2MB;
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uint32_t g_psx_ram_mask = PSX_RAM_2MB - 1u;
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static void check(int condition, const char *name) {
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if (condition) {
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printf("PASS %s\n", name);
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} else {
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fprintf(stderr, "FAIL %s\n", name);
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failures++;
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}
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}
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int main(void) {
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uint32_t off = 0;
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check(psx_mod_gpu_dma_resolve_address_for(0x00F01234u, 0u) ==
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(0x00F01234u & 0x001FFFFCu),
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"unallocated aperture preserves retail 2 MiB folding");
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check(psx_mod_gpu_dma_resolve_address_for(0x80F01234u, 0x20000u) ==
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0x00F01234u,
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"allocated KSEG0 aperture pointer survives 24-bit DMA");
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check(psx_mod_gpu_dma_resolve_address_for(0x00F30000u, 0x20000u) ==
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(0x00F30000u & 0x001FFFFCu),
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"unallocated aperture tail remains folded");
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check(psx_mod_gpu_dma_resolve_address_for(0x001ABCDEu, 0x20000u) ==
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0x001ABCDCu,
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"ordinary main RAM remains word-aligned and unchanged");
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check(psx_mod_gpu_dma_aperture_offset_for(
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0x00F1FFFCu, 4u, 0x20000u, &off) &&
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off == 0x1FFFCu,
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"last allocated aperture word is accessible");
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check(!psx_mod_gpu_dma_aperture_offset_for(
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0x00F20000u, 4u, 0x20000u, &off),
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"first unallocated aperture word is inaccessible");
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check(!psx_mod_gpu_dma_aperture_offset_for(
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0x00FFFFFCu, 8u, PSX_MOD_GPU_DMA_APERTURE_SIZE, &off),
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"cross-boundary access is rejected");
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g_psx_ram_size = PSX_RAM_8MB;
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g_psx_ram_mask = PSX_RAM_8MB - 1u;
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check(psx_mod_gpu_dma_resolve_address_for(0x00200000u, 0u) == 0x00200000u,
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"8 MB unique DRAM keeps addresses above 2 MiB");
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check(psx_mod_gpu_dma_resolve_address_for(0x00A00000u, 0u) == 0x00200000u,
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"8 MB DMA still folds the 24-bit window through the live mask");
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check(psx_mod_gpu_dma_resolve_address_for(0x80F01234u, 0x20000u) ==
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0x00F01234u,
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"allocated aperture still survives 8 MB folding");
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return failures ? 1 : 0;
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}
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