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Recent content by Peter z80.eu

  1. P

    The ZippA - does anybody has preserved the BIOS?

    No. I am a different person, although we talked about this topic in another forum already. Unfortunately nobody knows here (in the U.S.) this obviously rare ROM card.
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    ZPPA (Bluesky Innovations) bootable Parallel Port ZIP

    Does someone know this pretty nice ROM extension, which lets you use a parallel port ZIP drive for booting (e.g. a different operating system) ? I found an early article about it: https://brianlivingston.com/windowmanager/archive/cgi-bin/new/livingst/bl060997.htm Also, with the help of...
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    PicoMEM Project : Pi Pico on an ISA Board.

    So I would be interested in the card too, and no, I'm not interested in changing the design (if software exists which is working, it doesn't matter for me/it's fine for me). But the software support is essential. If there is no software driver publicly available, it will not make any sense to...
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    ST Microelectronics 486DX2 is (technically) a Cx486DX2 CPU ?

    Unfortunately it's not working (utility which is included in "5x86c2.zip"), instead, as a last advice, for Cx486DX2 (and licensed, similar ST and TI processor), it is working with "ctchip34.zip", can be downloaded here: https://ftp.gwdg.de/pub/magazine/ct/ctsi/ctchip34.zip (it's a software from...
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    ST Microelectronics 486DX2 is (technically) a Cx486DX2 CPU ?

    Chuck, you're 100% right, but my main problem was getting an utility program to enable or disable a feature of the CPU (Cyrix, ST, TI variants of the Cx486DX CPU), because the mainboard I was using got no Level 2 Cache (no SRAM Cache on the board itself, even no sockets for the SRAM). So my idea...
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    ST Microelectronics 486DX2 is (technically) a Cx486DX2 CPU ?

    What a pity, nobody answered. But I've found a utility program here: https://www.dosreloaded.de/Software/simtelnet/dos/sysutl/5x86c2.zip It's not exclusively for the Cyrix Cx486DX2, but works for it, too.
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    ST Microelectronics 486DX2 is (technically) a Cx486DX2 CPU ?

    Is a ST Microelectronics 486DX2 technically a Cx486DX2 CPU ? And if yes, what (DOS) utility can I use to enable the WB Cache ?
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    PPGA vs FCPGA ... a bit confusing

    I have a Baby-AT sized (P)PGA (Socket 370) mainboard, it's one of the first of its kind. That means I can only use Mendocino Celeron 300 to 533 MHz CPUs (with 2 volts Vcore). Are there any other options I did not have discovered yet? Would like to use a Celeron 533A (Coppermine) CPU, because of...
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    Looking for an older "non-PAE" Linux Antix version 14.4 (suitable for Pentium 1 systems)

    Enlightment brings the following announcement: https://lists.debian.org/debian-devel-announce/2016/05/msg00001.html ... that means all MX Linux/antiX 386 versions newer than version 15.01 (or in other words, beginning from 16.0) will not run with these first, old Pentium processors.
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    Looking for an older "non-PAE" Linux Antix version 14.4 (suitable for Pentium 1 systems)

    Testing with QEMU and the "-cpu" option, I was NOT able to run any _386 version of antiX with "-cpu pentium", but the older MX 14.3 non PAE version runs...
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    A short question about power consumption of old PCs / PC-hardware

    Update. I compared the technical specs of many (vintage) power supplies. I also searched for the power consumption number of a Compact Flash card. CF cards with lower capacity will not exceed max. 800mA, higher capacity around max. 1A, but typical is 200mA. I guess 150W is not too bad for a...
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    Looking for an older "non-PAE" Linux Antix version 14.4 (suitable for Pentium 1 systems)

    Someone recommended this version for my Pentium system, he told me it "must be a non-PAE" version. If the *_386.iso files with the higher version number would be exactly the same as "non-PAE", this would help a lot - but I do not know if this is true or not. As far as I remember compiler options...
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    Looking for an older "non-PAE" Linux Antix version 14.4 (suitable for Pentium 1 systems)

    Hi, I am desperately looking for an older Linux Antix version 14.4, filename is MX-14.4-non-pae.iso ( originally downloadable from https://downloads.sourceforge.net/MX-14.4-non-pae.iso - but not existing anymore ). The current SF page for older versions...
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    A short question about power consumption of old PCs / PC-hardware

    According to https://en.wikipedia.org/wiki/List_of_CPU_power_dissipation_figures a Pentium 200 takes 15,5 watts and a Pentium MMX 200 takes 15,7 watts, not a really big difference.
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    A short question about power consumption of old PCs / PC-hardware

    I have no choice to replace the IBM XT style power supply with a more modern "generic" power supply, the case of the power supply is very special, think about the red on-off switch. Well, I just have to try it out, I can start just with the motherboard (with CPU) and nothing else, measuring the...
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