Image Map Image Map
  • Category Widget (bottom-up)

  • Recent Blog Posts

    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

    JonB

    Thanks, gertk - post amended. Couldn't find...

    Thanks, gertk - post amended. Couldn't find H-HOLD trimmer on the schematic but it has V-HOLD. Duh... (slaps head).

    Also.. there's a picture of the CRT chassis in the service manual. There isn't...

    JonB Today, 06:33 AM Go to last post
    lafos

    If you have WINSTALL, you may be able to remap...

    If you have WINSTALL, you may be able to remap keys. I think MicroPro added WSCHANGE starting at version 4. I have WS 3.30 sold by Montezuma Micro, memory mapped for the Model 4 under their CP/M,...

    lafos Today, 06:30 AM Go to last post
    NeXT

    Guys, we are starting to enter Used Car Salesman...

    Guys, we are starting to enter Used Car Salesman territory here.

    https://consumermediallc.files.wordpress.com/2012/06/usedcarsalesman.jpg

    NeXT Today, 05:59 AM Go to last post
    roberttx

    OK, while I still like the tiny Asus machines, I...

    OK, while I still like the tiny Asus machines, I figure this one will serve our purposes for a lot less money.

    $310 for an Intel Core i5 3470 3.2GHz, with 16G DDR3, 1TB HDD and Win 7 Pro, for...

    roberttx Today, 05:58 AM Go to last post
    RWallmow

    Windows 3.0 will run on 640k though it's not the...

    Windows 3.0 will run on 640k though it's not the most useful that way. As far as finding memory, that's going to be tough, I went through a similar deal trying to find the proprietary memory...

    RWallmow Today, 05:41 AM Go to last post