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  1. VileR

    Reorganization of 'Genres' Category

    Yeah I definitely agree - sub-forums should be visible on mobile (from the main forum list). I did a bit of experimenting, and fortunately this can be done with a few changes in the CSS. The key seems to be modifying the existing rule for screen widths less than 650 pixels (logical, not...
  2. VileR

    IBM System/23 Datamaster, display and character generation

    I should've tried harder... rolled another loop, so this one's a bit shorter: 10 OPTION BASE 1 ! match str/array pos. 20 D = DISPLY(1) ! set US charset 30 LET EVEN$ = RPT$(CHR$(20)&" "&CHR$(8)&" ", 16) ! 64 (32 chars+even...
  3. VileR

    IBM System/23 Datamaster, display and character generation

    Nice, that'd be appreciated! I think a picture of the original CRT would be preferable - flat screens tend to have fuzzy interpolation when not at their native resolution, so the dot patterns may be harder to establish. But either way would work for me, whatever is more convenient. The BASIC...
  4. VileR

    IBM System/23 Datamaster, display and character generation

    (EDIT: ha, I must be losing it -- the bitmaps for ¼, ¾ do appear in the ROM... so these characters don't belong in the 'missing' list, but I can't edit my original post anymore.) Yeah, the ones in your set are all good - the bad one is in the other bitsavers set...
  5. VileR

    IBM System/23 Datamaster, display and character generation

    Hm, that's interesting - the CRT section of the service manual only mentions a read-only character generator (as the part that is addressed by the character codes in the row buffer, to fetch the dot patterns which are then sent to the video circuits). On the other hand, what you say would make...
  6. VileR

    IBM System/23 Datamaster, display and character generation

    I was looking into the available docs and firmware for this system (http://bitsavers.org/pdf/ibm/system23/), to try and figure out how this thing handles text display. Naturally I don’t have one of these – I’m just a certified nutter for bitmap font stuff, but the System/23 is particularly...
  7. VileR

    Jason Scott's VCF Donation

    Somehow that doesn't surprise me one bit. Par for the course, as I suspect others would realize if they're familiar with the individual in question. Internet clout is a hell of a drug. ;)
  8. VileR

    Gif Viewer for 8088?

    Autodesk Animator! I'm still kicking myself for not keeping all the stuff I made with that... For the OP, I should add: GIF looping was an extension of the format by Netscape, around 1996 or so. Animated gifs weren't widely used or supported before that point, so 8088 players are going to be...
  9. VileR

    Corona PPC-400 - what were the fonts like?

    ^ Yeah, that's the one... although of course that's an idealized (pixel-to-outline) rendering, sharper than a CRT. When I did that I had a nice hi-res screen photo as a reference; I can't seem to find it anymore, but this video has some pretty clear footage: . Even on a CRT, that's extremely...
  10. VileR

    MicroPython on IBM PC?

    Depends on how modern is 'modern', but gcc-ia16 is a thing. https://github.com/tkchia/gcc-ia16
  11. VileR

    Public Brand Software disks--worth archiving?

    On one hand, those are artifacts of digital culture worth preserving, and the source code for some of these could be interesting. On the other hand, there has to be some special punishment for whomever named one disk "Indiana Jokes and the Laff Crusade".
  12. VileR

    MS-DOS Reading keyboard port (60 61) without interrupts

    This. Although as long as you're taking care to read the port yourself, you can mask off IRQ1 at the PIC via port 21h, ensuring that INT 9 will not be invoked until you re-enable IRQ1.
  13. VileR

    Wang Advanced Professional Computer

    That was from NEC - I don't believe Wang's APC had anything to do with the NEC series, despite the initials (which stand for "Advanced Professional Computer"). :) Seems be a 286 machine that's not quite AT-compatible: https://archive.org/details/PC-Mag-1985-10-01/page/n33/mode/2up?view=theater
  14. VileR

    Problems with the Book 8088

    From the Star Control II manual, p25: "AT-class" - won't work on an 8088, or at the very least it wasn't tested on one. Even if it ran, you'd probably have a pretty miserable game experience.
  15. VileR

    Text displaying/graphics issue on my 5160

    As vwestlife writes those are indeed ANSI escape codes, but ANSI.SYS wasn't around until DOS 2.0 in 1983; and even then it couldn't be used with the original Deadline, since that one was a booter (i.e. loads itself with no DOS present, hence no device drivers). So while ANSI.SYS might work with...
  16. VileR

    Missing threads/messages from the old forums

    Maybe I'm having an extreme case of delayed ignition, but it seems that a lot of content from the old pre-migration forums is completely MIA. To be clear, I'm not referring to the separate issue of broken links in older threads (where the content may still exist, but cannot be accessed with the...
  17. VileR

    EGA PEL panning & scanlines

    Cycle-counting sounds like overkill for this purpose. Why not poll the status register at 3DAh for bit 0 (retrace) to detect the overscan period of each scanline, and make your changes then? Many parts of 8088 MPH and Area 5150 use this method for CGA as well (others do require cycle-counting...
  18. VileR

    CGA 160x100x16 bidirectional scrolling

    Huh - that's weird, considering that the ColorPlus card appears to use a real 6845, and no custom video BIOS extension. I assume they had to map the chip to the same port, and couldn't play too many tricks with address decoding or with the data lines, else the normal BIOS video modes wouldn't...
  19. VileR

    LDebug — „debug de Luxe”!

    I've been using DEBUGX/Enhanced Debug for a while, seems like the feature set is pretty similar.
  20. VileR

    A 'Hacker News'-type site for vintage computing/gaming

    A different idea I guess - it's more of a link aggregator where you can submit/discuss interesting material from elsewhere... not exactly like the typical discussion forum (although we do have this Link Exchange section here), or a Q&A/help site like Stack Overflow/Stack Exchange. As I see it...
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