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    neilobremski

    There Is No Subtraction

    These wonderful digital processing units of ours are, at their heart, very fast binary adders. There may be a SUBtract instruction but this is the same as adding the two's compliment of a number. ...

    April 25th, 2017 04:01 PM
    neilobremski

    The Great DIVide

    The DIV and IDIV instructions perform integer divisions simply and relatively quickly as opposed to creating a simple loop. Let me start by showing how one could divide an integer without these...

    April 24th, 2017 09:53 AM
    neilobremski

    ASCII / BIOS Character Graphics

    Even back on the original IBM PC you could get read-only access to the glyph pixel data for the standard ASCII character set, extended ASCII, and control characters with codes less than 32 (0x20) . ...

    April 18th, 2017 01:26 PM
    neilobremski

    DDA Texture Mapping [Part 1]

    I am learning and working on a quadrilateral DDA texture mapper for CGA that uses the 8x8 monochrome BIOS characters for texels, for use in an optimized version of Magenta's Maze. Reading Mats and...

    April 17th, 2017 10:22 AM
    PixelTHING

    The Complete Story of LucasArts (Part II - Final) | It's a Pixel THING - Ep. 116

    Here's the conclusion of #PixelTHING's Complete Story of Lucasfilm Games / LucasArts! Let's take a look at the last 22 years of LucasArts gaming history! Enjoy! The Complete Story of LucasArts...

    April 15th, 2017 02:22 AM
  • Recent Forum Posts

    3pcedev

    +1 - Use the Vibra16 installer. It won't work...

    +1 - Use the Vibra16 installer. It won't work with SB16 drivers.

    3pcedev Today, 02:56 PM Go to last post
    3pcedev

    The easiest way to determine what to do is as...

    The easiest way to determine what to do is as follows:

    First determine polarity. Take a look at the traces coming from the DC jack. One will be ground and the other will be positive. The positive...

    3pcedev Today, 02:53 PM Go to last post
    Avia

    OK, thanks guys. I was able to power it up with...

    OK, thanks guys. I was able to power it up with 9V (~0.25A) and it seemed to work (picture attached). It is a bit temperamental, but definitely shows signs of life.

    38147

    Avia Today, 02:47 PM Go to last post
    evildragon

    It's a Vibra chip, like one I sold recently. You...

    It's a Vibra chip, like one I sold recently. You need this driver: http://vogonsdrivers.com/getfile.php?fileid=1002&menustate=0

    evildragon Today, 02:40 PM Go to last post
    paul

    Yeah, the electronic humidity gauges may be a...

    Yeah, the electronic humidity gauges may be a couple of percent off. It's puzzling ... I'm in perfectly still air at the exact same numbers and feel perfectly comfortable in a light sweater. But I...

    paul Today, 02:32 PM Go to last post