I've just tried the same with non patched ADFS and a single Fujitsu M2681SAM SCSI drive with embedded controller (set to SCSI ID 0) hooked up to my host adaptor, and I get a Disc error when I try to mount a non existent LUN. So, I think the timeout you are seeing is likely down to the Adaptec controller.And my Acorn Winchester 130 with drive 0 only:
<---SNIP--->
I'm not sure how much of this timing is the Adaptec controller and how much ADFS. I suspect it's a combination of multiple retries by ADFS after receiving the not ready message from the controller. The number of retries in ADFS can be reduced, I did this in the "IDFS" build as it was resulting in ridiculously long delays accessing an LV-ROM disc with a disc error.
I've just had a quick look at the code again, and there are four places where it actually checks for the presence of a HDD (service 1, service 3, service 4 & service 12), but it seems to be checking for the presence of a host adaptor more than it is looking for a specific HDD:
Code:
; &9a63 referenced 3 times by &9ad7, &9b4b, &9bfb.check_for_hdd lda #&5a ; 'Z' ; 9a63: a9 5a .Z jsr sub_c9a6c ; 9a65: 20 6c 9a l. bne c9a77 ; 9a68: d0 0d .. lda #&a5 ; 9a6a: a9 a5 ..; &9a6c referenced 1 time by &9a65.sub_c9a6c sta scsi_data_reg ; 9a6c: 8d 40 fc .@. ldx #0 ; 9a6f: a2 00 .. stx scsi_irq_reg ; 9a71: 8e 43 fc .C. cmp scsi_data_reg ; 9a74: cd 40 fc .@.; &9a77 referenced 2 times by &9a68, &9c9c.c9a77 rts ; 9a77: 60 `Code:
.bye_command lda drive_number_stored_hi ; a0c3: ad 17 11 ... pha ; a0c6: 48 H tax ; a0c7: aa . inx ; a0c8: e8 . beq ca0ce ; a0c9: f0 03 .. jsr close_command ; a0cb: 20 b3 b1 ..; &a0ce referenced 1 time by &a0c9.ca0ce lda #&60 ; '`' ; a0ce: a9 60 .` sta drive_number_stored_hi ; a0d0: 8d 17 11 ...; &a0d3 referenced 1 time by &a0e3.loop_ca0d3 ldx #<osword_table_1b_stop ; a0d3: a2 ea .. ldy #>osword_table_1b_stop ; a0d5: a0 a0 .. jsr do_osword_command_with_control_block_in_xy ; a0d7: 20 89 80 .. lda drive_number_stored_hi ; a0da: ad 17 11 ... sec ; a0dd: 38 8 sbc #&20 ; ' ' ; a0de: e9 20 . sta drive_number_stored_hi ; a0e0: 8d 17 11 ... bcs loop_ca0d3 ; a0e3: b0 ee .. pla ; a0e5: 68 h sta drive_number_stored_hi ; a0e6: 8d 17 11 ... rts ; a0e9: 60 `.osword_table_1b_stop equb 0, 0, &17, &ff, &ff, &1b, 0, 0, 0, 0, 0 ; a0ea: 00 00 17... ...Statistics: Posted by KenLowe — Sat Feb 08, 2025 8:33 pm