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SM(S)C FDC 37c6xx: Return 0xFF on out of bound register read, fixes segmentation fault on the DEC Venturis 4xx.

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OBattler
2025-05-06 19:29:30 +02:00
parent ef3f57b338
commit 93025cc115
1 changed files with 1 additions and 1 deletions
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src/sio/sio_fdc37c6xx.c
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@@ -232,7 +232,7 @@ fdc37c6xx_read(uint16_t port, void *priv)
uint8_t ret = 0xff; uint8_t ret = 0xff;
if (dev->tries == 2) { if (dev->tries == 2) {
if (port == 0x3f1) if ((port == 0x3f1) && (dev->cur_reg <= dev->max_reg))
ret = dev->regs[dev->cur_reg]; ret = dev->regs[dev->cur_reg];
} }