Treat zero ATAPI maximum transfer as 65534. Fixes crash sometimes when booting PB570.

2018-02-26 19:52:10 +00:00 · 2018-02-26 19:52:10 +00:00 · 8193605469
commit 8193605469
parent d28a908839
3 changed files with 4 additions and 0 deletions
--- a/src/ide_atapi.c
+++ b/src/ide_atapi.c
@ -142,6 +142,8 @@ void atapi_process_packet(atapi_device_t *atapi_dev)
                case ATAPI_STATE_COMMAND:
                *atapi_dev->atastat = READY_STAT | (*atapi_dev->atastat & ERR_STAT);
                atapi_dev->max_transfer_len = (*atapi_dev->cylinder) & ~1;
+                if (!atapi_dev->max_transfer_len)
+                        atapi_dev->max_transfer_len = 0xfffe;
                atapi_dev->bus_state = BUS_CD | BUS_REQ;
                break;