Files | OMNI 4 - a Kaypro 2x Logic Analyzer

OMNI4FIN.IMD

DISK IMAGE Use Dave Dunfield's imd117. Notes about special settings are at the top of this file (viewable via 'edit'). E.G. R/W gap=20, Format Gap=23. Some drives and/or PC FDC chips may not be able to handle these tight constraints they used to fit an extra sector on each track.
Aside: The OMNI4's floppy drives CAN be replaced with 1.44MB 3.5inch drives(!). Block the 1.44MB hole on the disks with tape. And don't forget to change Drive-Select jumpers. 3.5in disks will only use half the available tracks (first 40 of 80, 400KB of 800KB (unformatted)) but do NOT choose DoubleStep!

imd - 353.86 kB - 01/09/2026 at 03:50

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Omni4 Article-Broadcast Engineering Nov1986.pdf

Adobe Portable Document Format - 17.47 MB - 10/16/2022 at 07:58

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2020-01-27 - Organized OCRed 150PPI Compressed.pdf

OMNI4 Manual! A sincere Thank You to Dominic for scanning this!
My OCR technique leaves much to be desired, unfortunately. If you know of better or want the original-quality scans, feel free to contact me.

Adobe Portable Document Format - 43.69 MB - 01/29/2020 at 06:49

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4625381579779084353.pdf

Kaypro Technical Manual, Dec. 1984, 1484-D
For all Kaypro models. There's another in these files as well [TODO compare]
Thankya @Dr. Cockroach, who also notes:
"I see that 2X is double-density and double sided 390K and will also read/write Osbourne disks....if that means anything helpful :-)"

Adobe Portable Document Format - 4.30 MB - 01/25/2020 at 00:42

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TEAC-FD235HF-A291--booleans.pdf

Floppy drive manual... this drive is *not* from the Omni4, but this manual has extensive data regarding the boolean-logic implemented in drives' circuitry regarding I/O. E.g. /STEP is ignored if /WG is active.

Adobe Portable Document Format - 481.84 kB - 11/15/2017 at 11:37

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photos2 0_TheseArePriorToWhitePowder_MaybeChipMarkingsReadableHereEh_TODO.zip

Old photos of the Logic Analyzer PCB prior to the "white-powder" incident, which destroyed readability of many chips. It's plausible some of the now unreadable chip-markings may be readable in some of these images (plausibly with some image-processing: contrast-adjustment, etc.).

Zip Archive - 32.04 MB - 10/08/2017 at 05:07

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OMNI4-fullsystem-20170926d.lst

Combined disassembly of boot ROM and all operating system components. This is ongoing work, current as of the timestamp in the filename.
(Note from esot.eric: WTF!!!! This is some INCREDIBLE work, here, by ziggurat29!)

lst - 639.21 kB - 09/27/2017 at 03:20

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others 0.zip

some other files from the logic-analyzer disk that may be part of the LA program, including la.la0 (?), la1.lah and la2.lah (which appear to be help files), z80.z80 (which appears to be an example for disassembling with the logic analyzer), pg.com (pattern-generator), prog.com (PROM programmer). These files were not verified with the originals and transferred at 300BPS, so I don't plan to verify them any time soon.
IMPORTANT NOTE!!! These files were serially-transferred via PIP.COM, which appears to have converted "Tab" to spaces, regardless of whether the files were transferred as binaries. These are PROBABLY WRONG. Instead, try using cpmtools with the 'kpiv' format (despite its being a KayPro 2x, not an IV/4) on the raw binary disk-image.

Zip Archive - 72.71 kB - 09/17/2017 at 23:51

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la.com.6.bs=1

la.com, copied from the original floppy via serial port at a whopping 300BPS.
Several other files exist which may be necessary for running this program (e.g. la1.lah)... These are large and not (yet?) downloaded.
IMPORTANT NOTE!!! These files were serially-transferred via PIP.COM, which appears to have converted "Tab" to spaces, regardless of whether the files were transferred as binaries. These are PROBABLY WRONG. Instead, try using cpmtools with the 'kpiv' format (despite its being a KayPro 2x, not an IV/4) on the raw binary disk-image.

bs=1 - 33.54 kB - 09/17/2017 at 19:02

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OMNI4U9.txt

Character Generator rendered into glourious ASCII art for the human eye's delight.

plain - 54.12 kB - 09/15/2017 at 16:05

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OMNI4U34.HEX

U34 on the KayPro motherboard... This appears to be the boot-ROM/BIOS, and contains messages specific to the OMNI4. 2764 eprom
This was read by physically removing the EPROM and plugging it into a chip-programmer.
This file also appears to exist on the floppy disk-image as "K2XBOOT"

hex - 22.51 kB - 09/13/2017 at 07:23

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OMNI4U9.HEX

U9 on the KayPro motherboard... apparently "K2xCHAR" the character-generator ROM 2732 eprom
This was read by physically removing the EPROM and plugging it into a chip-programmer.
This file also appears to exist on the floppy disk-image as "K2XCHAR"

hex - 11.26 kB - 09/13/2017 at 07:23

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8716101504835110184.pdf

CP/M 2 manual. Thanks again ziggurat29!

Adobe Portable Document Format - 528.06 kB - 09/10/2017 at 20:12

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5620701505058721359.pdf

KayPro Technical Manual, April 1984, 1484-C.
This covers all Kaypro models.
From this @ziggurat29 determined my OMNI4 to be a Kaypro 2x (Thanks!)
(Update: There appear to be later revisions of this manual)

Adobe Portable Document Format - 6.20 MB - 09/10/2017 at 19:57

Preview

OMNI4FIN.IMD DISK IMAGE Use Dave Dunfield's imd117. Notes about special settings are at the top of this file (viewable via 'edit'). E.G. R/W gap=20, Format Gap=23. Some drives and/or PC FDC chips may not be able to handle these tight constraints they used to fit an extra sector on each track. Aside: The OMNI4's floppy drives CAN be replaced with 1.44MB 3.5inch drives(!). Block the 1.44MB hole on the disks with tape. And don't forget to change Drive-Select jumpers. 3.5in disks will only use half the available tracks (first 40 of 80, 400KB of 800KB (unformatted)) but do NOT choose DoubleStep! imd - 353.86 kB - 01/09/2026 at 03:50		Download
Omni4 Article-Broadcast Engineering Nov1986.pdf Adobe Portable Document Format - 17.47 MB - 10/16/2022 at 07:58		Preview

2020-01-27 - Organized OCRed 150PPI Compressed.pdf OMNI4 Manual! A sincere Thank You to Dominic for scanning this! My OCR technique leaves much to be desired, unfortunately. If you know of better or want the original-quality scans, feel free to contact me. Adobe Portable Document Format - 43.69 MB - 01/29/2020 at 06:49		Preview

4625381579779084353.pdf Kaypro Technical Manual, Dec. 1984, 1484-D For all Kaypro models. There's another in these files as well [TODO compare] Thankya @Dr. Cockroach, who also notes: "I see that 2X is double-density and double sided 390K and will also read/write Osbourne disks....if that means anything helpful :-)" Adobe Portable Document Format - 4.30 MB - 01/25/2020 at 00:42		Preview

TEAC-FD235HF-A291--booleans.pdf Floppy drive manual... this drive is not from the Omni4, but this manual has extensive data regarding the boolean-logic implemented in drives' circuitry regarding I/O. E.g. /STEP is ignored if /WG is active. Adobe Portable Document Format - 481.84 kB - 11/15/2017 at 11:37		Preview

photos2 0_TheseArePriorToWhitePowder_MaybeChipMarkingsReadableHereEh_TODO.zip Old photos of the Logic Analyzer PCB prior to the "white-powder" incident, which destroyed readability of many chips. It's plausible some of the now unreadable chip-markings may be readable in some of these images (plausibly with some image-processing: contrast-adjustment, etc.). Zip Archive - 32.04 MB - 10/08/2017 at 05:07		Download
OMNI4-fullsystem-20170926d.lst Combined disassembly of boot ROM and all operating system components. This is ongoing work, current as of the timestamp in the filename. (Note from esot.eric: WTF!!!! This is some INCREDIBLE work, here, by ziggurat29!) lst - 639.21 kB - 09/27/2017 at 03:20		Download
others 0.zip some other files from the logic-analyzer disk that may be part of the LA program, including la.la0 (?), la1.lah and la2.lah (which appear to be help files), z80.z80 (which appears to be an example for disassembling with the logic analyzer), pg.com (pattern-generator), prog.com (PROM programmer). These files were not verified with the originals and transferred at 300BPS, so I don't plan to verify them any time soon. IMPORTANT NOTE!!! These files were serially-transferred via PIP.COM, which appears to have converted "Tab" to spaces, regardless of whether the files were transferred as binaries. These are PROBABLY WRONG. Instead, try using cpmtools with the 'kpiv' format (despite its being a KayPro 2x, not an IV/4) on the raw binary disk-image. Zip Archive - 72.71 kB - 09/17/2017 at 23:51		Download
la.com.6.bs=1 la.com, copied from the original floppy via serial port at a whopping 300BPS. Several other files exist which may be necessary for running this program (e.g. la1.lah)... These are large and not (yet?) downloaded. IMPORTANT NOTE!!! These files were serially-transferred via PIP.COM, which appears to have converted "Tab" to spaces, regardless of whether the files were transferred as binaries. These are PROBABLY WRONG. Instead, try using cpmtools with the 'kpiv' format (despite its being a KayPro 2x, not an IV/4) on the raw binary disk-image. bs=1 - 33.54 kB - 09/17/2017 at 19:02		Download
OMNI4U9.txt Character Generator rendered into glourious ASCII art for the human eye's delight. plain - 54.12 kB - 09/15/2017 at 16:05		Download
OMNI4U34.HEX U34 on the KayPro motherboard... This appears to be the boot-ROM/BIOS, and contains messages specific to the OMNI4. 2764 eprom This was read by physically removing the EPROM and plugging it into a chip-programmer. This file also appears to exist on the floppy disk-image as "K2XBOOT" hex - 22.51 kB - 09/13/2017 at 07:23		Download
OMNI4U9.HEX U9 on the KayPro motherboard... apparently "K2xCHAR" the character-generator ROM 2732 eprom This was read by physically removing the EPROM and plugging it into a chip-programmer. This file also appears to exist on the floppy disk-image as "K2XCHAR" hex - 11.26 kB - 09/13/2017 at 07:23		Download
8716101504835110184.pdf CP/M 2 manual. Thanks again ziggurat29! Adobe Portable Document Format - 528.06 kB - 09/10/2017 at 20:12		Preview

5620701505058721359.pdf KayPro Technical Manual, April 1984, 1484-C. This covers all Kaypro models. From this @ziggurat29 determined my OMNI4 to be a Kaypro 2x (Thanks!) (Update: There appear to be later revisions of this manual) Adobe Portable Document Format - 6.20 MB - 09/10/2017 at 19:57		Preview