test-drb

test-drb@ccmp.vtda.org

101090 discussions

by tony.nicholson＠computer.org

Hello David I saw your posting on the cctalk mailing list regarding RSX180. It is Hector Peraza that's been tinkering with this. He intends making the full source-code available via SourceForge or GitHub but is still working on preliminary web pages and documenting etc. No doubt he will provide you with more details. I've been tinkering with a Z280 system designed by Bill Shen (the Z280RC on the RetroBrew web site at https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:z280rc ) and have contacted Hector about porting it to the Z280. A Z180 system is also on my hobbyist "to-do" list. Should you decide to produce another run I'd be interested in one. Most likely I'd use a CompactFlash on IDE interface and an GoTek style floppy emulator with it. -- Tony Nicholson <tony.nicholson at computer.org>

7 years, 8 months

N8VEM and z80sbc project

by w9gb＠icloud.com

In 2015 the content of N8VEM projects were migrated to RetroBrewComputers.org (RBC). https://www.retrobrewcomputers.org/doku.php Active support for N8VEM and later RBC projects found at RetroBrew Computers Forum. https://www.retrobrewcomputers.org/forum/index.php?t=thread&frm_id=1& The N8VEM projects, using the S-100 bus, were migrated to John Monahan?s web site. http://www.s100computers.com/ Discussion forum for S-100 can be found on Google Group: S100computers https://groups.google.com/forum/m/#!forum/s100computers greg, w9gb chicago Sent from iPad Air

7 years, 8 months

P112 runs RSX-11

by dave＠661.org

I don't know who did it, but here's a video of a P112 running RSX: https://www.youtube.com/watch?v=5s6IOCCk3Uw If the creator of this thing is reading, I'd very much like to get my hands on RSX-180 and put it up on the P112 page at Sourceforge, Gitlab, et al. -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

7 years, 8 months

George Keremedjiev

by aek＠bitsavers.org

This has not been a good few months for historical/vintage computer people https://www.bozemandailychronicle.com/news/bozeman-founder-of-american-comp…

7 years, 8 months

SPARCstation 20 with SCSI2SD

by technoid6502＠gmail.com

The re-work of that Dallas nvram chip is just beautiful. It makes me ashamed of myself. (I just chopped into the epoxy with a pocket knife, soldered two leads, and velcroed the new batteries somewhere inside the machine I installed it in.) I salute you sir. Jeff

7 years, 8 months

sun model 47. code 4/40 does it have the nvram with battery?

by couryhouse＠aol.com

we were given this and a hard dribe a floor standimg decwriter..... does this use NV ram with dreaded battery? thanks,ed Sent from AOL Mobile Mail

7 years, 8 months

Opening RL02 disk pack

by guykd＠optusnet.com.au

At 12:24 PM 4/12/2018 -0800, you wrote: >On Mon, Dec 3, 2018 at 5:09 AM Christian Corti via cctalk < >cctalk at classiccmp.org> wrote: > >> Hi, >> how does one open a RL02 disk pack? A couple of packs need cleaning but I >> can't figure out how to open them... >> >> >I was curious to see if there would be any replies to this. I have just shy >of 40 RL02 packs, and a few of them had bad scratches rendering them >useless. Therefore, I attempted to open them in a non-destructive way, just >to see if it was possible. So far, I haven't had much luck. Also, I noted >that while all the packs I attempted were DEC (not clones), they did have >slightly different construction and mechanics, probably based on production >date. > >- Earl Ha, this made me realize I don't know either. Despite that I now have some RLO3K-DC packs, and one RLO2 drive. Dug one out. After a few moments of being stumped, found the trick. Here's how: On the blue handle, top center, look on the section that has the pivot pins. There is a flat plastic 'button' on which one end is slightly concave. With the handle DOWN (flat), put finger on that concave end of the button, and push sideways, till the button reaches the end of travel. With it still at end of travel, lift the handle up to vertical. At about 45 degrees (half way) you'll feel a resistance, then hear a thump. Once the handle is vertical, lift the pack up by the handle. The lower cover is separated and the disk is exposed. But it still is mostly covered, only a slot for the heads is open. You could lever open the several latches that hold the bottom inner cover on if you wanted. Guy

7 years, 8 months

RS6k 7012/320H woes

by ce.murillosanchez＠gmail.com

Since RS6K systems have been mentioned recently, I thought I should ask for advice.? I have a Powerserver 320H with 32MB of RAM, an 8-port async EIA-232 adapter, a SCSI adapter and a 400MB HD.?? No framebuffer or keyboard; no LAN card.? Because of the last issue, I haven't tried to do much with it.? I tried getting it to talk on the serial console (Serial 1 connector in the back), following all the advice I found on the net:? The pinout of the MODU serial connector, the null modem cable with full handshake (also driving the DCD line in the 320H).? I turn it on in service mode, and it spits a lot of LED codes, finds the HD, spins it up and it apparently loads something (I suppose AIX) from it.? But nothing is? ever sent out on the serial 1 port, or any other serial port.? I believe that during the POST it fails to initialize the serial 1 and 2 ports, because the 320H's DTR and RTS lines are never asserted (the ports in the async RS232 card do assert these on power up, but they are equally silent). I made sure that the CTS, DSR and DCD inputs of the 320H are being driven by the external terminal. I made a video of the LED codes during POST and found some problems; here are the codes and their meaning: 120 BIST starting a CRC check on the 8752 EPROM. 122 BIST started a CRC check on the first 32K bytes of the OCS EPROM. 124 BIST started a CRC check on the OCS area of NVRAM. 130 BIST presence test started. 101 BIST started following reset. 153 BIST started ACLST test code. 154 BIST started AST test code. 100 BIST completed successfully; control was passed to IPL ROS. 211 IPL ROM CRC comparison error (irrecoverable). !!!!!!! 214 Power status register failed (irrecoverable).?????????? !!!!!!! 218 RAM POST is looking for good memory. 219 RAM POST bit map is being generated. 290 IOCC POST error (irrecoverable).???????????????????????? !!!!!!! 291 Standard I/O POST running. 252 Attempting a Service mode IPL from 7012 DBA disk-attached ???????? devices specified in IPL ROM Default Device List. 253 Attempting a Service mode IPL from SCSI-attached devices ???????? specified in the IPL ROM Default Device List. 299 IPL ROM passed control to the loaded program code. 814 NVRAM being identified or configured. 538 The configuration manager is going to invoke a configuration ???????? method. 813 Battery for time-of-day, NVRAM, and so on being identified or ???????? configured, or system I/O control logic being identified or ???????? configured. 538 The configuration manager is going to invoke a configuration ???????? method. 520 Bus configuration running. 538 The configuration manager is going to invoke a configuration ???????? method. 869 SCSI adapter being identified or configured. 538 The configuration manager is going to invoke a configuration ???????? method. 954 400MB SCSI disk drive being identified or configured. 538 The configuration manager is going to invoke a configuration ???????? method. 539 The configuration method has terminated, and control has ???????? returned to the configuration manager. 551 IPL varyon is running. 553 IPL phase 1 is complete. The code 290 above is particularly worrysome, I think.? The NVRAM battery reads 2.85 volts even after all these years. I reseated all of the chips that are on bases, all of the cards, and connectors; there was no change.? Any ideas on how to proceed? carlos.

7 years, 8 months

ISO: 68000/68010 CPU board for ZAX ICD-178 (CPU S-813)

by derschjo＠gmail.com

Hi all -- I picked up a ZAX ICD-178 in-circuit debugger in the hopes of using it to help debug / reverse-engineer a couple of 68k-based machines I have.? This unit can work with 68000, 68010, and 68008-based machines, however a different emulation CPU module is used for the 68008 vs. the 68000/68010.? Unfortunately, mine came with only the 68008 CPU module. Since this is a fairly uncommon device, I figure it's unlikely, but just in case someone's sitting on a pile of parts somewhere, if you have the 68000/68010 Emulation CPU module ("CPU S-813") please drop me a line. Thanks as always, Josh

7 years, 8 months

p112

by jtsdadinaz＠hotmail.com

Are there any boards available or rom monitor updates?

7 years, 8 months

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