mbaker@ucs.adelaide.edu.au (Matthew Baker) (05/28/91)
Hi,
I am looking for some information on an Adaptec 4000 SCSI to MFM
controller board. The PROM is revision date of 1983
The questions are:
1/ There doesn't seem to be a jumper for SCSI id number.
What SCSI id would the unit appear as?
2/ There is an 8 way x 2 jumper on the board that appears
as follows
O M K I G E C A
. . . . . . . .
. . . . . . . . J5
P N L J H F D B
Does anyone know what these jumpers do? One side (a-o)
goes to an 8156, and the other side (b-p) is tied logic high.
Thanks in advance.
Matthew Bakerdet@hawkmoon.MN.ORG (Derek E. Terveer) (06/01/91)
mbaker@ucs.adelaide.edu.au (Matthew Baker) writes: > I am looking for some information on an Adaptec 4000 SCSI to MFM >controller board. The PROM is revision date of 1983 > 1/ There doesn't seem to be a jumper for SCSI id number. > What SCSI id would the unit appear as? The SCSI id jumper is defined by the 8x2 linear block, defined below. > 2/ There is an 8 way x 2 jumper on the board that appears > as follows > O M K I G E C A > . . . . . . . . > . . . . . . . . J5 > P N L J H F D B Adaptec ACB-4000 Jumper Definitions: These jumpers are arranged in two blocks; one is an 8x2 linear block and the other is a 3x2 T-block. A C E G K M O B D F H L N P T S R PU Jumper Definition Installed Removed --- --------------------------------- ----- ----- A-B LSB of controller's SCSI Address bit=1 bit=0 C-D Another bit of the SCSI ID bit=1 bit=0 E-F MSB of controller's SCSI ID bit=1 bit=0 G-H DMA Transfer Rate SYSCLOCK/4 DATACLOCK/2 K-L Not Used M-N Support of Syquest 312, DMA 630 and Enabled Disabled drives that drop SEEK COMPLETE sig- nal during head switching O-P Self Diagnostics Enabled Disabled R-PU Write Precompensation turned off Enabled Disabled for both drives R-S Write Precomp starts at same cy- Enabled Disabled linder as reduced write current for both drives R-T Write Precomp is applied to all Enabled Disabled tracks for both drives And now for *my* questions. Has anyone gotten the ACB-4000 board to work with a miniscribe 6085 MFM drive? Also, does anyone have a quick and dirty little first-time format utility written in either unix or dos that will work with either the adaptec aha-1542a or seagate st-01a scsi controller cards? derek -- Derek "Tigger" Terveer det@hawkmoon.MN.ORG -- U of MN Women's Lax I am the way and the truth and the light, I know all the answers; don't need your advice. -- "I am the way and the truth and the light" -- The Legendary Pink Dots