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  1. aperezbios

    Announcing ZuluIDE - an ATAPI CD-ROM and Removable (read-write) media emulator

    Rabbit Hole Computing, my company, has been working on such a thing quietly for the last year and a half. While it isn't 100% ready for prime time, it is available for those who wish to help improve the product. ZuluIDE is powered by an RP2040 microcontroller, in concert with a small Lattice...
  2. aperezbios

    In search of any working DBA ESDI drive for PS/2 Model 55

    Does anyone here happen to have any DBA ESDI they're no longer in need of, or would be willing to sell? I'm in northern California, and just picked up a PS/2 Model 55. I'm also looking for two 4MB 72-pin SIMMs (80ns) suitable for use in this machine, as it only came with one 2MB SIMM. Even one...
  3. aperezbios

    VCF West attendance data?

    Hey folks, I had a great time at VCF West this year, and was wondering if we know how many tickets were sold. Regards, Alex Perez WB6ALX
  4. aperezbios

    Announcing BARCC, the Bay Area RetroComputing Club; Inagural meeting Friday Aug 31

    Attention San Francisco Bay Area Retro-computing enthusiasts! I would like to introduce the Bay Area RetroComputing Club, and invite new members to join the BARCC general-discussion mailing list, where you can choose to receive a daily digest, or no e-mail at all, as you so desire. We will be...
  5. aperezbios

    DEC Rainbow PSU model H7842D capacitor list

    Since I couldn't find this anywhere, I wanted to document the capacitors within the DEC Rainbow 100 PSU, which itself has a DEC model number of H7842D 2x 3200uF @ 16V 1x 2200uF @ 35V 2x 820uF @ 250V 1x 560uF @ 20V 1x 330uF @ 20V 3x 47uF @ 16V 1x 10uF @ 35V 1x 2uF @ 25V
  6. aperezbios

    Monochrome DEC Rainbow keyboard and video cabling options

    I picked up a DEC Rainbow PC100-B2 for free at this most recent VCF West show, and it has a 10MB MFM HDD, no color video option, and no cables of any sort. I've got DB15 video cables I can hack up, and I understand this thing can output monochrome composite video. I have a couple of displays...
  7. aperezbios

    Troubleshooting Compaq Portable III power supply failure

    Hey folks, I picked up a Compaq Portable III at VCF West this past weekend, and it came with a bad power supply. If I power it on with no load, the built-in fan powers up, but none of the DC output voltages are anywhere close to correct. If I power it on with a load, it sits there and ticks...
  8. aperezbios

    My first VAX, a MiroVAX 3400

    Hey folks, I'm cross-posting this here, as well as comp.os.vms. I'd like to introduce myself, and my first VAX acquisition, which is technically an "rtVAX 3400" which I made a lowball best-offer for on eBay, and picked up locally today. I have only powered it on headless, and it starts with...
  9. aperezbios

    Acquired a PS/2 Model 60 with Reply Corp PowerBoard planar replacement; need PS/2 FDD

    I recently acquired an interesting beast, a PS/2 model 60 with a Reply Corporation-manufactured, Socket 3 MCA Planar motherboard replacement, the PowerBoard 60. It came with no floppy drive, RAM, or CPU, but it came to life once the requisite components were installed. I found a replacement 6...
  10. aperezbios

    Looking for IBM PS/2 3.5" 1.44 MB floppy drive

    Hi there, I'm in the San Francisco Bay Area, specifically San Jose, and am looking for a 3.5" PS/2 floppy drive with the card-edge connector...working or not. Anybody here happen to have one?
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