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    Ssm vb1b sn 1133

    Hello, this was the info that was on Anchor Electronics web page when they were selling the card- Message from Anchor Electronics at purchase... SSM VB-1Video Interface $11.95 Found a handful of these 1976 collector’s items. These were likely rejects originally – some areas have been marked...
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    Ssm vb1b sn 1133

    Craig, I did find Herb's site where he discussed the SSM products and his documentation page only listed the SSM VB1B card. I did not Email Herb just read the information he noted about conversations with the SSM developers/engineers. >>> Charles
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    Ssm vb1b sn 1133

    Craig, these are the images from Anchor Electronics of the unbuilt board. >>> Charles
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    Ssm vb1b sn 1133

    Hello Craig, I don't think I will be of much help in finding an original SSM VB-1 manual as the board I have was purchased from Anchor Electronics as a "found in the warehouse" deal with no documentation at all. The information I did find was from a sales flyer for several of SSM products...
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    Ssm vb1b sn 1133

    SSM VB1A Video Board... "What ever became of this board? Did you identify the differences between it and the B version?" Yes, I found an old parts list from SSM which listed all the parts for the VB1A and it is substantially different from later boards. After populating the card with the...
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    TRS-80 Model 1 won't power when attached to Expansion Interface.

    From the Radio Shack Expansion Interface service manual the connector "J2" has pins#37 and pins#39 originally connected to GND. In later Radio Shack revisions they modified the board to isolate pin#37 and connect it to +5V for the buffered cable power source. There were three expansion...
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    TRS-80 Model 1 won't power when attached to Expansion Interface.

    Check the expansion interface J2 connector for the buffered interface power mod (ORANGE WIRE). This routes +5V to a connector on J2 that is normally GND. If the mod is present, +5V from the expansion interface is grounded when a ribbon cable is plugged in. This is supposed to be used with the...
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    ZFDC help needed with 3" drive

    Anthony, if I understand your question, yes, the Teac FD235HF will work as a modified 8" Disk Drive if you can identify the required pads on the Teac Drive (most are not marked nor is there information on doing this). Once modified, the drive will not work for a IBM MS-DOS system as the drive...
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    ZFDC help needed with 3" drive

    Anthony, I have John's ZFDC board and from my experiance it would be best to get it working with an 8" drive if possible. As mentioned in John's write-up, 5" drives and 3.5" drives can be modified to make them look like 8" drives to your system and this is the route I took to get the board...
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    Zenith SupersPORT 286 - Backlight is burned up

    I have a couple supersport computers with bad backlighting and have researched this problem. The closest thing I could find was electroluminescent panels that could be cut to shape and used in-place of the original panels. They are like plastic sheets and one dimension could be shortened to...
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    Cromemco dazzler replica project

    Hello Hugo, if you need another source for those 16P ribbon connectors I think Mouser sells them "Kobiconn 151-2P16-E" for about $2.00 each. >> Charles
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    [Macintosh Plus 1MB] Help with booting to system disk for first time. Disk, floppy drive, or ram problem? Video in comment.

    The ejection gear on the Apple Floppy Drives fall apart on most old drives but can be replaced (there is a video on YouTube). If you need a replacement I have purchased several off Ebay from a guy that resin prints them. They have worked on all my old Macintosh and Apple 3.5" drives. Search...
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    USBPUT for S100Computers.com Serial I/O board

    If anyone is in need of the USBPUT.COM program that will send a file from a CP/M machine to a PC using the S100Computers Serial I/O board I have modified the Mike Douglas program 'PCPUT' to work with a USB port. I'm sure this is out there somewhere, but I couldn't find it...only the USBGET.COM...
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    The Warp Factor (Atari 800 game) real or vaporware?

    I'm pretty sure "The Warp Factor" was only released for IBM and Apple. The game "The Cosmic Balance" was released for the Atari 800 and is essentially a very similar game from SSI and the same author Murry ?. I think this game may be available from "http://www.atarimania.com" but I know...
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    TRS-80 model 1 power switch - poor quality replacement

    I replaced my expansion switch with one from DigiKey...search for my post "Power Switch TRS-80 Model 1" for details. I also think TRS Ian sells one on his Australian website if that is closer. >Charles
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    Questions about S-100

    My understanding of the S-100 is that you might be able emulate an Apple II or TRS-80 on an S-100 if you obtained the software (ROMs) from the original Apple/Tandy machines but advanced graphics is not really what the S-100 normally does. I would recommend that you look into the "Mister FPGA"...
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    Need Help Identifying 8 bit ISA RAM card

    This is the Driver Disk from my RAMbank card & manual... >>> Charles
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    Buffered E.I. cable

    This is an old schematic from Pascal Holdry who did a lot of amazing work in recreating the TRS-80 hardware. > Charles
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    Model I question

    Hello mdh, I'm sorry but I don't know what "MIRE" means....Model 1 Revised Expansion?? When you open up your expansion unit you will be able to tell which version you have and what modifications have been done to it. The important thing is to verify if the Orange +5V wire is present in the...
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    Model I question

    Hello mdh; there is a lot of good information on the TRS-80 Model 1 and the EI on this site. As to the various revisions to the EI and the Keyboard unit, I believe there were four... 1) Original with no mods (connected with ribbon cable) 2) Powered buffer box between the two units (used...
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