Image Map Image Map

Search:

Type: Posts; User: krebizfan

Page 1 of 20 1 2 3 4

Search: Search took 0.09 seconds.

  1. Replies
    2
    Views
    22

    Several here have that system but they don't...

    Several here have that system but they don't shown up here in some time. The one most recently on hasn't posted for about a month. I doubt I could successfully guide through the process of turning...
  2. Replies
    6
    Views
    66

    Which motherboard are you planning on using? Dual...

    Which motherboard are you planning on using? Dual socket Pentium 4 Xeons did result in a fairly mediocre XP gaming experience. It was better than the mainstream Pentium 4 at the same time but two...
  3. Appendix B of the owner's manual seems to show...

    Appendix B of the owner's manual seems to show Z170 uses different key codes than the IBM PC.
  4. There are places selling new portable ATX cases...

    There are places selling new portable ATX cases with LCD. Unfortunately, the price seems to be over $2000 and that is without a motherboard.
  5. Replies
    47
    Views
    1,131

    No, the Z171 is not a PC compatible and will not...

    No, the Z171 is not a PC compatible and will not run standard DOS versions. Obviously, the OP's 5150 will not share the problems.
  6. Replies
    18
    Views
    536

    The default precision of the 8087 may be...

    The default precision of the 8087 may be excessive for many games. How many small sub-pixels does it make sense to subdivide a screen into?

    A programmer can always compile three versions of a...
  7. Thread: MediaMaster

    by krebizfan
    Replies
    3
    Views
    78

    Was your Osborne upgraded to support double sided...

    Was your Osborne upgraded to support double sided disks?
  8. Replies
    47
    Views
    1,131

    The serial number is listed on the previous page....

    The serial number is listed on the previous page.

    One MB of EMS can be used as a disk cache or RAM disk. Putting UCSD Pascal on the RAMdisk makes switching from editor to compiler much faster and...
  9. Hard drive controllers with built in caches had...

    Hard drive controllers with built in caches had secret sauce caching routines. Not publicly known and often optimized for specific tasks meaning relatively poor for others. It worked in a similar...
  10. Replies
    18
    Views
    536

    Bit less than that. IBM's initial release of the...

    Bit less than that. IBM's initial release of the 8087 cost $260 and that included a replacement 8088. By 1987, the 8087 was barely more than $100.
  11. Replies
    18
    Views
    536

    MS Flight Simulator does not support any math...

    MS Flight Simulator does not support any math coprocessor. https://jeffpar.github.io/kbarchive/kb/021/Q21392/ Falcon 3.0 seems to have been the first flight simulator to support a math coprocessor...
  12. Replies
    32
    Views
    673

    If it is going into an interpreter, speed...

    If it is going into an interpreter, speed probably won't be critical but size might. The OP hasn't mentioned how limited is the 8088 system the code needs to run on.
  13. Replies
    6
    Views
    206

    It would be difficult to get a 486 or earlier...

    It would be difficult to get a 486 or earlier system to use more power than that unless you have a giant CRT. The ST-4096 hard drive could use up to 50 watts; 486 uses less than 10 watts; chipset...
  14. Replies
    6
    Views
    206

    Least amount should be zero aka "off." Maximum...

    Least amount should be zero aka "off."

    Maximum power draw would be about 5w for 8088 and 12" color monitor could range up to about 50w. Don't plug big CRTs into the second connector on the...
  15. Replies
    32
    Views
    673

    Group of routines: I know I had a book on it but...

    Group of routines: I know I had a book on it but I can't find it.

    PC Tech Journal did a three part article on floating point math with code written in 8086 assembly. That would be OCT thru DEC...
  16. Replies
    32
    Views
    673

    I have written my own floating point routines....

    I have written my own floating point routines. Validating those was tedious. I don't know how long the OP plans to take before having code that can be shown to others. If stuck, having a working...
  17. Replies
    32
    Views
    673

    Bywater Basic is a portable open source BASIC...

    Bywater Basic is a portable open source BASIC interpreter written in C. Version 1 was public domain and MS-DOS. Earlier versions were smaller and thus better for 8088 usage. The version 2 math code...
  18. It was better than the original line of...

    It was better than the original line of cache-less Celerons. The 66MHz bus speed versions were good chips for the inexpensive business machine market: stable stodgy and cheap. The higher bus speed...
  19. Replies
    14
    Views
    431

    Dell Latitude D630 was a Core2 Duo laptop with...

    Dell Latitude D630 was a Core2 Duo laptop with serial port but no parallel port. I think some of the Dell and Thinkpad docking stations had parallel, serial, and PS/2 ports even much later. I just...
  20. The PCJr Patch is listed...

    The PCJr Patch is listed https://gopherproxy.meulie.net/sdf.org/0/computers/pcjr/misc/FILES I don't see a way to download the JR8087 patch and I have no idea if that patch is even close to what the...
  21. DoD is on cartridge right? I have little...

    DoD is on cartridge right? I have little experience with CoCo cartridges. Page 56 of the service manual points lists some checks. For example, making sure the data and address lines connect between...
  22. The PCJr seems to have needed a BIOS patch for...

    The PCJr seems to have needed a BIOS patch for the 8087 to work so some systems may be harder than I expected. I wish I could find illustrations of the various 8088+8087 boards that plugged into the...
  23. Well, if you really want a copy, check with...

    Well, if you really want a copy, check with LearningAlly (ORG) which used to be Recording for the Blind & Dyslexic and the source of the audio book version of MS manuals. I don't see the NT manual in...
  24. The connection is well documented so adding a...

    The connection is well documented so adding a board should be relatively easy.

    DOS and BIOS don't do anything to handle the NMI. Careless 8087 programming is an excellent method of locking a...
  25. Can you save simple BASIC files to cassette? And...

    Can you save simple BASIC files to cassette? And load them back? There are a lot of potential problems so simplify to just making sure the tape recorder and CoCo work.
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4