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Disable DVRP workaround for compatible adapters #915

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Merged
uyjulian merged 1 commit into from
Aug 29, 2026
Merged

Disable DVRP workaround for compatible adapters #915

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9 changes: 5 additions & 4 deletions iop/dev9/atad/src/ps2atad.c
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Original file line number Diff line number Diff line change
Expand Up @@ -311,11 +311,12 @@ int _start(int argc, char *argv[])
Official adaptors appear to have a 0x0001 set for this register, but not compatibles.
While official I/O to this register are 8-bit, some compatibles have a 0x01 for the lower 8-bits,
but the upper 8-bits contain some random value. Hence perform a 16-bit read instead. */
if (SPD_REG16(0x20) != 1) {
ata_gamestar_workaround = 1;
ata_gamestar_workaround = (SPD_REG16(0x20) != 1) ? 1 : 0;
if (ata_gamestar_workaround) {
M_PRINTF("Compatible adaptor detected.\n");
} else {
ata_gamestar_workaround = 0;
/* Reportedly, some compatible adapters output more than SPD_CAPS_SMAP | SPD_CAPS_ATA | SPD_CAPS_UART in the SPD_R_REV_3 register. */
/* https://github.com/regttycomit/PS2_CXD9731_HDD_ADAPTOR/blob/7a6d058019f932eb701ced3bddca6c7eda498b50/hdl/chip.v#L506 */
ata_dvrp_workaround = 0;
}
#endif
#endif
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