Date: Fri, 30 Dec 1994 17:55:20 -0500 From: Matt Thomas <matt@lkg.dec.com> To: "Christoph P. Kukulies" <kuku@gilberto.physik.rwth-aachen.de> Cc: freebsd-hackers@freefall.cdrom.com Subject: Re: digital hard drive problem (non FreeBSD specific) Message-ID: <199412302255.RAA18606@whydos.lkg.dec.com> In-Reply-To: Your message of "Fri, 30 Dec 1994 19:44:30 %2B0100." <199412301844.TAA02850@gilberto.physik.rwth-aachen.de>
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If you took the RZ25-E out of an Alpha, you will need to modify the jumpers
so that it spins up on power-up.
Drive front
_________________________________
| [J---7|
| PPPPP|
| 54321|
| |
| |
|J]P1 |
|-]P2 |
|-]P3 |
|-]P4 |
|-]P5 |
|-]P6 |
|-]P7 |
|6]P8 |
| |
| |
| |
| P3[J| Jumper block J5 or J7 used
| P2[-| to set the SCSI ID number
| P1[5|
+-------------------------------+ ID# P1 P2 P3
[_____________________][________]
SCSI connector DCvoltages 0 OUT OUT OUT
1 OUT OUT IN
2 OUT IN OUT
3 OUT IN IN
4 IN OUT OUT
5 IN OUT IN
6 IN IN OUT
7 IN IN IN
Jumper block J6
----------------
P1 Selftest factory use only OUT
P2 Spin up on power applictation OUT
Wait for spin up command IN
P3 Not used OUT
P4 Write protect OUT
P5 Parity check enabled IN
P6 Reserved OUT
P7 Drive supplies power to SCSIbus IN
P8 Power to internal terminators IN
Jumper block J7
----------------
P4 Spindle sync option IN (Sync not used)
P5 For remote LED indicator
(P1,P2,P3 used for remote SCSI-ID switches.)
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