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  1. Replies
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    Proxy ATDH1150USB is a "Just Yet Another" JTAG...

    Proxy ATDH1150USB is a "Just Yet Another" JTAG programmer based on the FTDI FT2232H. You just need to set a FT2232H USB VID:PID for the ATMISP to accept it.
    Another way is to use a LPT and cheap...
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    gslick, Thank you! I saw this book but never went...

    gslick, Thank you! I saw this book but never went so far...

    It looks sligtly similar to tungsten EPROM (2x2048x4).



    P.S. I've found a rare Soviet PAL clone. White ceramic and gold...
    61878
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    Original PAL programming algorithm

    Does anyone have a documentation about original MMI PAL programming algorithm ?
    (or compatible: AMPAL, TIBPAL e.t.c. not a GAL/ATF). AFAIK it was under some sort of NDA in the 1980'th...

    i.e....
  4. Thread: NetBSD archive

    by alecv
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    101

    Wow. Archive restored at new place:...

    Wow. Archive restored at new place:
    https://archive.netbsd.org/pub/NetBSD-archive/
  5. Thread: NetBSD archive

    by alecv
    Replies
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    NetBSD archive

    Hi!

    Does anyone have a copy of the NetBSD archive ?
    https://ftp.netbsd.org/pub/NetBSD-archive/
    is emty now

    JFYI: They silently removed archive...
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    `__muldi3`, `__mulsi3` e.t.c. are the "extended...

    `__muldi3`, `__mulsi3` e.t.c. are the "extended arithmetic" functions which GCC emits for resuliting code.
    They are defined in the "libgcc" library:...
  7. Thread: ST-225 schematic

    by alecv
    Replies
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    Try ...

    Try

    http://www.minuszerodegrees.net/manuals.htm#Seagate
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    JFYI...

    JFYI
    http://0xea.blogspot.com/2013/11/the-at-pc-6386-wgs.html
  9. Replies
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    Since HDD executes commends the Control cable is...

    Since HDD executes commends the Control cable is OK. Check a Data cable.
    MFM ST-412 uses differential transcievers on the Data cable (similar to RS-422, at 10MHz). I.e AMD 26LS31/26LS32 .
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    82S137 is an EPROM implementing decoder and...

    82S137 is an EPROM implementing decoder and address selection
    https://datasheetspdf.com/pdf/551116/NXP/82S137/1

    9'th chip is a parity
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    JFYI: More info about CALL 5 interface...

    JFYI: More info about CALL 5 interface
    http://www.os2museum.com/wp/wordstar-needs-address-wraparound/
    http://www.os2museum.com/wp/who-needs-the-address-wraparound-anyway/
  12. ... from the EMS board advertisement EMS...

    ... from the EMS board advertisement


    EMS compatible software.

    Package Company Type
    ------------- ----------------- -----------------
    AutoCAD Autodesk Computer Aided...
  13. Replies
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    You may find another Soviet 8086 clones...

    You may find another Soviet 8086 clones interesting. Discussed at the end of this topic...
  14. Thread: Linux for M68K

    by alecv
    Replies
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    7,174

    JFYI. With QEMU and Debian 10 Sid you may have a...

    JFYI. With QEMU and Debian 10 Sid you may have a "native" build tools and debugger i.e.

    (gdb) disass /rs main
    Dump of assembler code for function main:
    hello.c:
    3 int main () {
    0x800003f8...
  15. Thread: Linux for M68K

    by alecv
    Replies
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    7,174

    I’ve successfully built recent QEMU git (5.0.50)...

    I’ve successfully built recent QEMU git (5.0.50) on MSYS2 under Windows10.
    It boots m68k Linux 4.16.0 (unofficial Debian 10 Sid).
    https://wiki.qemu.org/Documentation/Platforms/m68k
    It emulates...
  16. Thread: Linux for M68K

    by alecv
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    7,174

    Can anyone please suggesr a light opensource...

    Can anyone please suggesr a light opensource emultor to run relative modern m68k Linux (i.e. Debian) ?
    "Minimal system" is enought, not a full system emulator like HATARI, ARANYM or Snoebill....
  17. http://www.leningrad.su/museum/main.php?lang=0

    http://www.leningrad.su/museum/main.php?lang=0
  18. It should be possible to implement it with FPGA,...

    It should be possible to implement it with FPGA, starting from here
    https://github.com/freq0ut/VHDL-Project/blob/master/VHDL%20Examples/Ex_ISABusInterface.vhd
    and extend FSM to full 16-bit ISA...
  19. JFYI most of the Soviet "XT clones" were based on...

    JFYI most of the Soviet "XT clones" were based on the 8086 clone (KR1810VM86) not on 8088.
    ES-1840, Iskra-1030 e.t.c.
    Soviet industry cloned 8088 too late, seems they did not suppose iAPX86 series...
  20. Awesome! Do you have a tools for the National...

    Awesome!

    Do you have a tools for the National Semiconductor 32000 series (ns32k) ?
    From the ns32k documentations:
    ======
    The GNX debugger also directly supports the HewlettPackard HP64772...
  21. No, cheap controllers did not support both...

    No, cheap controllers did not support both encoding schemes. But there was a "translating" controllers which translated real RLL C/H/S
    into "pseudo MFM" C/H/S with 17 sectors per track.

    JFYI:...
  22. Try DosBox https://www.dosbox.com It's an...

    Try DosBox
    https://www.dosbox.com
    It's an emulator program which emulates an IBM PC compatible computer running a DOS operating system.
    Although it intended for old games it is possible to run...
  23. Most of MFM controllers have 10MHz of 20MHz...

    Most of MFM controllers have 10MHz of 20MHz quartz/oscillator while RLL controllers have 15MHz or 30MHz ones.
  24. the difference between the ST11R and the ST11M?...

    the difference between the ST11R and the ST11M?
    MFM and RLL (30% better density but requires hi-quality disk drive)

    ST-4096 has 1024 tracks so virtually any controller with "user C/H/S" should...
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    ESS688F physically is a 8-bit chip (with ...

    ESS688F physically is a 8-bit chip (with integrated 16-bit DAC/ADC and 16-bit sound samples support but w/o OPLx).
    It can emulate SB 2 or SB PRO depending on GPI0 pin (55)...
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