- Unscrew the case via the 4 screws on the back.
- Desolder the positive lead of the rechargeable battery. This is necessary because the bootloader of U4 is only present immediately after power-on.
- Configure Tigard (or other USB-TTL device) as follows:
- VTGT switch to 3V3
- TX to P1 (left side of U4, clearly marked
- RX to P2 (just above P1)
- GND to GND (just below P1, unmarked)
- Prep VTGT to connect to VTGT (just above P2, unmarked, trace goes to pin 2 of U4)
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Return-path: <@STONY-BROOK.SCRC.SYMBOLICS.COM:unix-haters-errors@MC.LCS.MIT.EDU> | |
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The transposing of the lines are from right to left, left to middle and | |
middle to right (camera-side to far-side). The failed one is on "from right | |
to left". The wear pattern (picture with red parallel lines) tells me that | |
the C-hook is not made of cast iron but made of cast steel because cast iron | |
is hard and strong but it is so brittle that when it breaks, it will go in | |
one clear break (full face) and not in the pattern as seen | |
(wear-wear-wear-then tear-off). This hook is on very light duty since it | |
only needs to support itself (insulation included) and the loose short | |
transposing line and not the tower-to-tower line (hence the one-inch size). | |
My guess is that there was a small crack on the inside-side of C as |
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This probably includes extra caps...I also ordered a pile of new tantalums that aren't included here, | |
standard 0.1u@35V and 1u@50V | |
Qty Digikey P/N MFR P/N Description | |
================================================================================== | |
1 338-3802-ND SLP682M035A7P3 CAP ALUM 6800UF 20% 35V SNAP | |
1 399-7488-ND PME271M660KR30 CAP FILM 0.6UF 10% 275VAC RADIAL | |
4 493-7094-ND LGN2E681MELA40 CAP ALUM 680UF 20% 250V SNAP | |
3 493-8579-ND LGY1C822MELZ30 CAP ALUM 8200UF 20% 16V SNAP | |
2 493-15720-ND UPM1E102MHD6 CAP ALUM 1000UF 20% 25V RADIAL |
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From afo@wal.hp.com Tue Aug 30 15:39:57 EDT 1994 | |
Article: 8609 of rec.music.makers.marketplace | |
Newsgroups: rec.music.makers.marketplace,rec.music.makers.synth,rec.music.makers | |
Path: yale!yale.edu!spool.mu.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!apol | |
lo.hp.com!netnews | |
From: afo@wal.hp.com (Aaron Oppenheimer) | |
Subject: USED GEAR PRICE LIST (USA) | |
Sender: usenet@apollo.hp.com (Usenet News) | |
Message-ID: <AFO.94Aug30135042@hpwargd.wal.hp.com> | |
Date: Tue, 30 Aug 1994 17:50:42 GMT |
platform | # of DLs (approx) | # of DLs in 2019 (approx) | comments |
---|---|---|---|
Docker | 70.5m + 19m = 89.5m | 60.4m + 6.7m = 67.1m | See notes |
Windows | 72k | 100k | 75% 3.x, 25% 2.x. Extrapolated from 253d of data |
deb (Debian / Ubuntu) | 65k | 65k | 76% are 3.x, 24% are 2.x |
rpm (CentOS / RedHat) | 63k | 40k | 69% are 2.x, 31% are 3.x |
source .tar.gz |
11.6k | 38k | extrapolated from 10 days of data; primarily 3.1.1 |
Mac | 18k | 25k | 67% 3.x, 32% 2.x. Extrapolated from 253d of data |
Good reference for the HARDWARE PART ONLY: https://ava.upuaut.net/?p=951 if you use this board. Stop when you get to "Enabling PPS/ATOM support in NTPD." and skip down to "Setting stationary mode."
Other hardware guides include https://blog.webernetz.net/ntp-server-via-gps-on-a-raspberry-pi/
and https://robrobinette.com/pi_GPS_PPS_Time_Server.htm but follow the hardware setup section only,
including editing your /boot/cmdline.txt
, /boot/config.txt
and /etc/modules
files.
Drive Type | Diskette type | RT-11 Blocks (512b) | Image size (bytes) |
---|---|---|---|
RX01 | SSSD | 494 blocks | 252928 bytes |
RX02 | SSDD | 988 blocks | 505856 bytes |
RX03 | DSDD | 1976 blocks | 1011712 bytes |
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.TYPE DU1:DYV4DS.DOC | |
! COMMAND AND DOCUMENTATION FILE TO UPDATE THE DISTRIBUTION RT11-V4 HANDLER | |
! DYV4DS.DOC 30-DEC-80 880 VERSION | |
! THIS FILE BOTH DOCUMENTS THE PROCEDURE AND CONTAINS THE COMMANDS | |
! REQUIRED TO MODIFY THE DEC RT11-V4 RX02 HANDLER TO SUPPORT DOUBLE | |
! SIDED OPERATION. | |
! | |
! SETUP FOR DUAL FLOPPY SYSTEM | |
! ----- --- ---- ------ ------ |