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Type: Posts; User: rdmguy

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    All I had to do for the ISA slot was plop the...

    All I had to do for the ISA slot was plop the remaining portion of the 16 bit ISA slot and solder it in. The through holes were already in the board and connected to the bus. ISA is a passive bus, so...
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    Yes, the original Portable, the Portable Plus,...

    Yes, the original Portable, the Portable Plus, and the original Portable 286 all have the same CRT. I want to put my green CRT back in my Macintosh Classic for giggles, but my Classic's logic board...
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    In the original green CRT the sharpness is good,...

    In the original green CRT the sharpness is good, but the phosphor has a very slow fade out; so scrolling games like Commander Keen and games that are white one black like Silpheed, are nearly...
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    Looks like it's a weird proprietary expansion...

    Looks like it's a weird proprietary expansion module for a DeskPro 386
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    Here's another auction that may show a better...

    Here's another auction that may show a better view of the RAM expansion card. It's a weird one....
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    You're right, I am looking into putting a faster...

    You're right, I am looking into putting a faster oscillator on-board, however there are only two oscillators, the 14.318 MHz ISA oscillator and a 48 MHz oscillator near the on-board memory. The speed...
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    Souped up Compaq Portable 286

    Hey guys, I just wanted to show off my tricked out Compaq Portable 286!

    So far I've:
    - Installed a Compaq EGA card
    - Added a 287XL co-processor
    - Installed a 16 MHz 80286 CPU (sadly only...
  8. I have a Sharp QD-101MM LCD screen from that era....

    I have a Sharp QD-101MM LCD screen from that era. It probably uses the same panel as what you're looking for.
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    While I'm waiting for a DC-DC adapter to arrive,...

    While I'm waiting for a DC-DC adapter to arrive, I swapped the CRT in my Compaq Portable with one from a Macintosh Classic. Here's a picture from the first smoke test.
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    While I'm waiting for a DC-DC adapter to arrive,...

    While I'm waiting for a DC-DC adapter to arrive, I swapped the CRT in my Compaq Portable with one from a Macintosh Classic. Here's a picture from the first smoke test.
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    Okay, so the the bodge wire on the VGA card is...

    Okay, so the the bodge wire on the VGA card is supplying 5v to the converter board. It makes me hopeful that I'll be able to use any video card with a feature connector. The Dolch will fit a regular...
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    I've been tracing out the video converter board...

    I've been tracing out the video converter board today, and it appears that Dolch re-purposed the unused pin 25 on the vesa feature connector to power the converter board. I suspect that's what the...
  13. I have a Dolch branded bag for my Dolch 386 VPAC,...

    I have a Dolch branded bag for my Dolch 386 VPAC, but I need a DC/DC power supply for the plasma display of my Dolch. Hit me up if have a spare.
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    That's great info! My Paradise card has an extra...

    That's great info! My Paradise card has an extra wire running to the feature connector as well!

    Is 180v the correct operating voltage?

    Here are the front and back of the video converter board...
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    Update: bought another MD480L640PG3 panel, still...

    Update: bought another MD480L640PG3 panel, still no activity on the display. DAC board has a flip flop on it so I'm pretty sure it's a DAC now. I think the display will take VGA input so I'm going to...
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    Addendum: I'm pretty sure the mystery board...

    Addendum: I'm pretty sure the mystery board between the feature connector and the display is a DAC
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    Dolch VPAC Plasma Display blues (in orange)

    I bought a Dolch VPAC 386 but I can't get anything to display on the plasma screen.

    The plasma display (a Panasonic MD480L640PG3) runs on high voltage DC and there's a boost converter inside of...
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    Any EGA/CGA monitor

    Hey all,

    I'm looking to buy any EGA or CGA monitor. I'm in the Pacific Northwest, Portland.

    Thanks,

    Randon
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    The internal monitor is using an analog signal,...

    The internal monitor is using an analog signal, so you'd have to find a way to convert the TTL signalling to analog.

    I suspect a good deal of video card manufacturers produced adapters for the...
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    Oops, that's the CGA version of PX3. Here it is...

    Oops, that's the CGA version of PX3. Here it is in EGA glory:
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    And here's one of Monkey Islandô
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    Here's a few screenshots! 55280 55281 55282

    Here's a few screenshots!
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    Nevermind, I found the part numbers: 000410-003...

    Nevermind, I found the part numbers: 000410-003 and 000412-001. I actually managed to locate one on ebay! Catacombs 3D, here I come!
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    Can you tell us the Compaq Assembly number of...

    Can you tell us the Compaq Assembly number of your Portable EGA card?
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    http://www.vcfed.org/forum/showthread.php?50640-EG...

    http://www.vcfed.org/forum/showthread.php?50640-EGA-on-built-in-CRT-of-Compaq-Portable-1

    For reference, the pinout of the VDU->CRT connector on my system is:

    ----------------
    | 1 2 3 4 || 5 |...
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    For reference, the pinout of the VDU->CRT...

    For reference, the pinout of the VDU->CRT connector on my system is:

    ----------------
    | 1 2 3 4 || 5 |
    | 6 7 8 9 || 10|
    ----------------

    1 - Red - VSync - Negative Pulse ~150us All Modes,...
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