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Olivetti M24/AT&T 6300/Xerox 6060 Display Enhancement Board (DEB) materials available

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  • 1ST1
    replied
    Thanks, so if I want to have an variable Windows 1.0x, I have to install it for every graphics mode, save the win100.bin file somewhere, and later make a batch which copies the file with the resoultion I just want to have for that start. That work takes some time, but as I then am able to change video mode without completely reinstall, that makes sense.

    Leave a comment:


  • JohnElliott
    replied
    Originally posted by 1ST1 View Post

    Do you know how to replace the graphics driver in Windows 1.0x? I don't want to reinstall, just swap the video driver to enhance from 640x400 1 to 16 colors...
    The Windows 1.x installer builds the video driver into WIN100.BIN, so it isn't straightforward to replace it. One way round this is to pretend you're a driver developer and create a "Slow Boot" version using a debug kernel, which loads the drivers individually.

    Leave a comment:


  • 1ST1
    replied
    Yes, thaks, that is a M24SP, 10 MHz version, but now, how to replace the OGC 640x400x1 driver in Win 1,03 without reinstalling?

    Leave a comment:


  • Trixter
    replied
    Congrats on finding one

    Leave a comment:


  • 1ST1
    replied
    deb.jpg

    YESSSSSSS !!! Tschaka!

    Do you know how to replace the graphics driver in Windows 1.0x? I don't want to reinstall, just swap the video driver to enhance from 640x400 1 to 16 colors...

    For GEM it's quite easy, I only need to replace a driver file, https://web.archive.org/web/20200224...ers/video.html

    This is my GEM.BAT in c:\DOS for my FreeGEM-Installation

    Code:
    ...
    :STEP1
    ECHO Graphics Driver?
    ECHO o - OGC 640x400x1
    ECHO c - CGA 640x200x1
    ASK3 "-> " oc
    IF ERRORLEVEL 2 GOTO CGA
    IF ERRORLEVEL 1 GOTO OGC
    :CGA
    COPY C:\GEMAPPS\VIDEODRV\SDCGA8.CGA C:\GEMAPPS\GEMSYS\SDPSC10.VGA
    GOTO :STEP2
    :OGC
    COPY C:\GEMAPPS\VIDEODRV\SDATT9.EGA C:\GEMAPPS\GEMSYS\SDPSC10.VGA
    GOTO :STEP2
    :STEP2
    ...
    (in STEP2 it will ask to load ACC or not and hide *.acc or not, to save memory or to load full comfort, and then in step 3 it will ask to enable GEM 1.20 or GEM/3 desktop app)

    I just have to enhance this by adding to copy SDDEB8.EGA
    Last edited by 1ST1; May 29, 2021, 02:09 PM.

    Leave a comment:


  • Trixter
    replied
    FTP links are working. If your browser doesn't support FTP links, you can use an FTP client such as filezilla or winscp.

    Leave a comment:


  • tonata
    replied
    The FTP link does not work. How does it look like this DEB?
    I have an Olivetti M24 with color monitor, but this is not with DEB I suppose?

    Leave a comment:


  • Trixter
    replied
    To further clarify: They don't actually support the 640x400x2 mode, but instead pass the BIOS calls to the host BIOS. So if you use those cards in a non-M24 system, you won't get 640x400x2 support.

    Leave a comment:


  • pevalcas
    replied
    Stefan, the OEC/OVC doesn't support by default the 640x400x16 DEB mode. Unless you have a special BIOS routine of driver. I don't think the Paradise chip equipping the OEC or OVC supports the DEB mode and the Look Up Table that was specific to the DEB.

    The 640x400x16 on 4 planes, with the specific dithering, blinking, special effects, double 8 colors text on graphics mode, was specific to the DEB hardware.

    If anybody among you needs additional clarifications,I'm ready to help!

    The PEGA1, PEGA2 and PEGA2A chips and the PVGA1A and PVGA2A (or WD90C00) only supported the standard 640x400x2 colors mode (0x40). The DEB used 3DDh register, 3DFh register that are not implemented in the Paradise/WD chips.

    Regards, Vincenzo.

    Leave a comment:


  • 1ST1
    replied
    The naming for that card is quite confusing, if you have a look on that capa.pdf, you can see that it would fit in M24 (and M21 but does not make sense here), M28, M240 and M280.

    Additionally you also find the name "Video Enhancement Adapter" (VEA) for the GO329 in some technical documents for M24. So real Olivettians don't talk about "DEB" or "EGC" or "VEA", but about "GO329", this is more precise.

    But as the GO329 has M21/M24 proprietary 16 Bit connector, it can not fit in M240, as it only has standard 8 Bit ISA like any other XT as well, and it can not fit into M28 and M280 as they are 80286 AT with standard 16 Bit ISA slot. If you have a look into cap2.pdf (M240), and cap4.pdf (M280) you also will not find any mention of the GO329 what is the trueth, as it does not make sense because of the slots. But you still find it in the cap3.pdf (M2, but there also it does not make sense.

    But M240, M28 and M280 can support the 640x400x16 modes, without using the GO329 if they have the original OEC/OVC (EGA/VGA) cards. There are also monochrome/greyscale cards (OGC,PGC) which only support the 640x400 in monochrome, like M24 OGC card.

    Leave a comment:


  • Gianfilippo
    replied
    Just a sidenote: in some documentation Olivetti talks about an "E.G.C. Enhanced Color Graphics Controller" which should be the same DEB. I don't know if any board was actually marked EGC but it may be an older name. https://secure.corradoroberto.it/doc...tems2/capa.pdf

    Leave a comment:


  • Trixter
    replied
    Originally posted by tipc View Post
    this card is the same as the STB Super Res 400, no? Show photos. I know there are some posted already somewhere.
    No, it's definitely a proprietary card created by Olivetti to add additional planes to the existing VDC. This adds 640x400 16-color support, as well as "136-color" support (the DAC can flash between two colors in hardware), and the ability to overlay a textmode page on top of graphics mode and have them be addressed independently. The main disadvantage is that hardly anything supports it.

    Originally posted by normanator View Post
    There are pics of the actual board at oldskool.org
    I run oldskool.org

    Leave a comment:


  • normanator
    replied
    Originally posted by Trixter View Post
    There are pics of the actual board at oldskool.org

    Leave a comment:


  • tipc
    replied
    this card is the same as the STB Super Res 400, no? Show photos. I know there are some posted already somewhere.

    Leave a comment:


  • Trixter
    replied
    Appreciate the use of the picture; snagged (and will attribute you as the source). If you can make a higher-res version of the box, both sides, that would be great. Someday I hope to do a video on the DEB. I definitely lack the slipcover.

    Leave a comment:

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