23 Sep
2021
23 Sep
'21
3:40 p.m.
I've read that there is circuitry in the expansion base (BA40A?) has circuitry . Does
anyone know what the circuitry does? Is it required for SCSI operation? (I hope not, or
I'll have to kludge one up to make use of pk2k SCSI boot-roms!)
23 Sep
23 Sep
3:52 p.m.
I've read that there is circuitry in the expansion base (BA40A?) has
circuitry . Does anyone know what the circuitry does? Is it required
for SCSI operation? (I hope not, or I'll have to kludge one up to make
use of pk2k SCSI boot-roms!)
I don't know what circuitry there is or is not in the expansion base.
Whatever the case, it is not required for SCSI operation. I have had
no problems plugging one end of a 50 way ribbon cable into the 50 pin
IDC socket on the motherboard and the other end into a SCSI disk.
Regards,
Peter Coghlan.
4:05 p.m.
On Thu, Sep 23, 2021 at 6:41 PM Jonathan Stone via cctalk
<cctalk at classiccmp.org> wrote:
I've read that there is circuitry in the expansion
base (BA40A?) has circuitry . Does anyone know what the circuitry does? Is it required
for SCSI operation? (I hope not, or I'll have to kludge one up to make use of pk2k
SCSI boot-roms!)
IIRC the DHT32 has a small board in the skirt and the external RD
interface may have a board as well. SCSI (for a TK50Z-FA, originally)
is just a cable. The 50-pin connector on the mainboard is correctly
wired for SCSI. It may well have TERMPWR active and not
current-limited though, if it matters to your target.
-ethan
4:26 p.m.
Ethan Dicks via cctalk wrote:
On Thu, Sep 23, 2021 at 6:41 PM Jonathan Stone via
cctalk
<cctalk at classiccmp.org> wrote:
Indeed, Ethan.? TERMPWR is active.? I actually have two 1GB disks inside
mine (I do not
have an expansion box), and I kludged? a centronix? SCSI connector in
the back to connect
external stuff.
By the way, if anybody needs the four patched rom images, I can share
them off-list.
carlos.
I've read that there is circuitry in the
expansion base (BA40A?) has circuitry . Does anyone know what the circuitry does? Is it
required for SCSI operation? (I hope not, or I'll have to kludge one up to make use
of pk2k SCSI boot-roms!)
IIRC the DHT32 has a small board in the skirt and the
external RD
interface may have a board as well. SCSI (for a TK50Z-FA, originally)
is just a cable. The 50-pin connector on the mainboard is correctly
wired for SCSI. It may well have TERMPWR active and not
current-limited though, if it matters to your target.
-ethan
957
days inactive
957
days old
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