John Oliger Co.
Owner(s):
John Oliger
11601 Whidbey Dr., Cumberland, IN 46229
Products
| Name | Description | Computers |
|---|---|---|
| 2068 EPROM Programmer | Board adds the ability to program 2764 and 27128 EPROMs to your 2068 system. Board comes with documentation on assembly, use, theory of operation, tips and details on replacing the Home ROM of the 2068 with a 27128 EPROM. Programmer requires the Vpp Power Supply or a 4-22VDC regulated adjustable power supply with voltmeter. | Timex/Sinclair 2068 |
| 2068 Expansion Board | Compact expansion board plugs into the rear expansion connector of 2068 computer, provides slots for Oliger expansion boards. Board includes one “spare” 20 pin IC socket for a user circuit, a rear edge connector feed through for attaching the 2040 printer, modem, etc., and the necessary circuitry for a RGB monitor interface. RGB circuit requires | Timex/Sinclair 2068 |
| 2068 Parallel Printer Port | Printer port for printers that have a Centronics interface. Uses the same port and BUSY bit as the AERCO 2068 printer interface. Port is fully decoded and contains a “PRINTER READY” LED to show printer current status. Also included are hi-res screen dumps for Okidata, Olivetti PR2300, Gemini 10X and Gorilla Banana printers. | Timex/Sinclair 2068, Downloadable |
| 2068 Spectrum Joystick Port | This small joystick board Is designed to plug into your 2068 expansion board to emulate the Kempston Joystick interface. This interface is for use with a Spectrum emulator, ROM, or Romswitch and Spectrum software. It is supported by any Spectrum software that Is “Kempston compatible” looking to the software exactly like the real Kempston Joystick | Timex/Sinclair 2068 |
| 2068 User Cartridge Board | Plugs into the cartridge port of the TS 2068 computer. Can hold two 2764 or two 27128 EPROMs in any combination. It allows TS 2068 owners, when used with the TS 2068 or TS 1000 programmers, to store BASIC programs in cartridge form. Includes assembly instructions, schematic and instructions for its use with BASIC programs. | Timex/Sinclair 2068 |
| 2716 * 4 EPROM Reader | Map its 2716 EPROMs anywhere in the 64K memory. Board is intended to be used as a “cartridge” for storing Sinclair programs on EPROM. It can be used to store machine code tools in the 8-16K block. | Timex/Sinclair 1000 |
| 2716 EPROM Programmer | This programmer was also described in SQ #s 1 and 2, so this article is recommended reading on this one, too. The programmer is memory mapped at 2000-27FFh and programs easily from Basic by simply poking the desired data to one of the eproms’ locations. The programmer has its own latches onboard and does NOT | Timex/Sinclair 1000 |
| 2764 * 2 EPROM Reader | Board is capable of mapping either of its 2764 EPROMs anywhere in the 64K map in 8K blocks. Board is intended to be used as a “cartridge” for storing Sinclair programs on EPROM. It can be used to store machine code tools in the 8-16K block. | Timex/Sinclair 1000 |
| 2764 EPROM Programmer | This programmer is identical to the 2716 Programmer except for the following: The circuit has been changed to accept 28 pin 2764 eproms : The eprom is mapped 2808-3FFFA. 21VDC is now required for the programming voltage. This board comes with its schematic, assy instructions, and a theory of operation sheet. | Timex/Sinclair 1000 |
| 64K Dynamic RAM | 64K DRAM board for the TS1000, TS1500 or ZX81. Special features of this memory include: 8-12K on/off switch 12-16K on/off switch two banks of 8K ram available mapped 8-16K (Bank A/B switch) and 48-64K on/off switch | Timex/Sinclair 1000 |
| Decoder | Fits inside the ZX80/ZX81 and remaps internal RAM to 8-9K or 9-10K. For use with external RAM pack. | Sinclair ZX80, Sinclair ZX81 |
| DFh Mapped Universal I/O Port | Timex/Sinclair 2068 | |
| Disk Board A | Disk drive interface that used the WD1770 drive controller. Supported up to four disk drives. | Timex/Sinclair 2068 |
| Disk Board B with NMI Save | DOS board for the Oliger system, with NMI save feature. JLO SAFE (Simple and Fast Extended) Disk Basic is supplied on EPROM with this board. SAFE used the same syntax as cassette commands, but with a slash following the SAVE/LOAD command. Syntax for saving a BASIC program would be SAVE /”FILENAME” or SAVE /”FILENAME” LINE | Timex/Sinclair 2068 |
| Expansion Board | 4 or 6 slot expansion board for use with Oliger projects for the ZX81/TS 1000. | Timex/Sinclair 1000 |
| Kempston joystick port | Board/kit that plugs in to the Oliger expansion board. Fully decoded, can be used with the TS 1000. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| LKDOS/Extended BASIC Cartridge | Contains Larken DOS with 8K ROM and 8K RAM on the cartridge. Used to control Larken DSK-400 or other disk interfaces. All LKDOS or extended BASIC commands use the PRINT #4: syntax. Support for all Timex DOS commands. Extended basic commands include CIRCLE, windows, box clear and fill, channel support for devices, variations of POKE, | Timex/Sinclair 2068 |
| Memory Access Monitor | Eight LEDs indicate which bank of memory the Z80 is accessing. Uses only one IC. Can be useful in debugging hardware projects and machine code programs that cause the computer to crash by indicating where the CPU is after the crash. Supplied as bare PC board and schematic. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Parallel Printer Port | This project was detailed completely in Syntax Quarterly, issues 1 & 2. Port is memory mapped at location FFFFh and is completely decoded. Project includes schematic, theory of operation sheeta and machine code listing comments of a copy routine for use with the Okidata ML80 and ML82A printers. Circuit and software can be adapted to | Timex/Sinclair 1000 |
| TMS 9918A Video Upgrade | Two board, extensive upgrade that integrates the TMS 9918A video display processor into the ZX81/TS1000. Provides: color multiple graphics resolutions, up to 256×192 pixels up to 32 sprites a SLOW mode almost as fast as FAST mode blink free FAST mode lower case characters instead of inverse upper case Interfaces the TMS 9918A color graphics | Timex/Sinclair 1000 |
| TMS9918A VDP Enhanced BASIC Programming Cassette | For use with the TMS9918A Video Project/Upgrade. | Timex/Sinclair 1000, Downloadable |
| Vpp Power Supply | This small single sided board provides 4.4 volts, 21 volts, and 25 volts DC for use with any programmer offered by the John Oliger Co. This circuit is designed to put as little stress on the EPROM as possible during programming and is recommended for use with these programmers. The board is supplied with schematic, | Timex/Sinclair 2068 |
Books
Periodicals
Documents
- Build a 2764 Based "Cartridge" Board and Programmer for Your '81
- Build a 2764 Based Cartridge Board and Programmer
- EPROM Cartridge Download Routine
- Future Commands Planned for JLO SAFE V2
- Future Commands Planned for JLO SAFE V2
- How to Program a 2764 EPROM Using Hot Z
- How to use the 2068 User Cartridge Board
- JLO 2068 Floppy Disk Interface
- JLO SAFE DOS v2.51 Disassembly
- JLO SAFE V2.4 Errata
- JLO SAFE V2.65 Disassembly
- John Oliger Co ZX81 TS1000 Product List
- Oliger 2068 Expansion RGB Circuit Instructions
- Oliger 2068/Spectrum Joystick Interface
- Preliminary Information on the Oliger/Kingsley Disc System
- Problems in Using the New V.24 "Merge" Command
- Problems in Using the New V.24 "Merge" Command
- Programming 2764 and 27128 EPROM (for TIMEX-2068 Programs Written in BASIC Only) Using the John Oliger Co. 2068 EPROM Programmer and 2068 User Cartridge Boards
- The John Oliger Co. 2068 EPROM Programmer
- The John Oliger Co. Product Lists
- Using the John Oliger Expansion System to Create Instant-Load (EPROM) Software for the TS 1000 Computers part 3
- Using the John Oliger Expansion System to Create Instant-Load (EPROM) Software for TS 1000 Computers
Downloads
| Name | Description | Computers |
|---|---|---|
| JLO SAFE DOS v2.35 | ROM image for use with John Oliger disk drive system. | Timex/Sinclair 2068 |
| JLO SAFE DOS v2.65 | Source code for JLO SAFE V2.65, its object code, and an assembler to assemble the object code from the source code. | Timex/Sinclair 2068 |
| TI Video Software | Programs for use with the John Oliger TMS9918 video board for the Timex Sinclair 1000. | Timex/Sinclair 1000 |
| TMS 9918A Video Upgrade ROM | ROM for the TMS 9918A Video Upgrade. Second “printer” ROM also on board. | Timex/Sinclair 1000 |
| TMS9918A Video Enhanced Basic EPROM Programmer | Timex/Sinclair 1000 |
Articles
| Title | Description | Computers |
|---|---|---|
| A Break Through DOS for the TS-2068 | MAX DOS: combining Oliger DOS and Larken DOS. | Timex/Sinclair 2068 |
| A First Hand Look at the Oliger Disk System | Timex/Sinclair 2068 | |
| A last minute Addendum | Notes about bugs in the versions of JLO Safe DOS. | Timex/Sinclair 2068 |
| A Menagerie of Opinions and Some Programming Tips | Tips about disks and disk systems; a short program to print labels. | Timex/Sinclair 2068 |
| A Multi-Manager for SAFE DOS V2.52 | Timex/Sinclair 2068 | |
| A query from one of our members: TS2068 Larkenized Oliger System | Timex/Sinclair 2068 | |
| A Universal Treatment for Bugs in the Program Area | Editorial about John Oliger’s article, “Problems in using the new V2.4 MERGE Command,” and how the techniques can be applied to debugging programs. | Timex/Sinclair 2068 |
| About Disk Drives | There are many types of disk drives available. Commodore introduced a 3 1/2 inch drive with their Amiga computer. Now IBM has a new 3 inch drive. We Safe Disk users have a system that will work with almost anything that can be hooked up to a Shugart Standard Parallel I/O Disk Drive. | Timex/Sinclair 2068 |
| Bits and Pieces | News from the UK; Mini Xmod communications package; additions to user group list; repair changes; Oliger/Kingsley disk system; TI 99/4A keyboard for the 1000 and other updates. | |
| Break-In for CATs | Short routine for SafeDOS to SAVE or LOAD during CATalog. | Timex/Sinclair 2068 |
| Catalog Listing | Timex/Sinclair 2068 | |
| CATPRINT | Timex/Sinclair 2068 | |
| Check Disk Drive Speed | Timex/Sinclair 2068 | |
| Check Your Surge-Protected Circuits | Advice on checking the devices plugged into surge protectors and repairing “zapped” devices. | Timex/Sinclair 2068 |
| Converting the Oliger 64K Ram for the 2068 | To use the JLO 64 K RAM board (from the TS1000) on the 2068, it is necessary to make these changes. | Timex/Sinclair 2068 |
| Corrupted Disks??? | Occasionally you might come across a disk that has become corrupted in its file storage pointer area (track zero) that will simply refuse to load any file at all. What will usually cause this is a glitch on power up of either the drive or computer, with the disk installed. | Timex/Sinclair 2068 |
| D.O.S. for the 2068 | Timex/Sinclair 2068 | |
| Disjointed Programming Tips | Short descriptions of available DOSes and utilities. | Timex/Sinclair 2068 |
| Disk Directory | Timex/Sinclair 2068 | |
| Disk Tools | Timex/Sinclair 2068 | |
| Dock Bank Memory for Twenty Cents: Convert a TS-1000 Ram Memory for the TS-2068 | How to convert a 64K RAM pack for the TS1000 to map to dock memory on the TS2068. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Dropped Bytes | Potential cure for dropped printer data when using an AB switch. | Timex/Sinclair 2068 |
| For Your Support | Hardware and software offerings from Chia-Chi Chao, Mike Trivisonno, Jack Donahy, Fred Nachbaur, Tim Worcester, Games to Learn By, Kraig Pritts, John Oliger, Tom Woods and Knighted Computers. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| For Your Support | Column announcing hardware, software for Timex/Sinclair owners. Products from Bruce Taylor, Fred Nachbaur, Tom Woods, John Oliger, Jack Donahy, 21st Century Electronics, Zebra Systems, Steve Wyatt, G. Russell Electronics and Tad Painter listed. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| For Your Support | Product announcements from Fred Nachbaur, John Oliger Co., Grey & Clifford Computer Products, Larken Electronics, Chia-Chi Chao, Robert Fischer, Bill Bell, G. Russell Electronics, EZRA Group II, RMG Enterprises, David Hill, Paul Holmgren, GLENN Technics, John Deering. | |
| For Your Support | Product announcements from John Oliger Co., NovelSoft, Willcocks Research Consultants, Grey & Clifford Computer Products, Knighted Computers, G. Russell Electronics, Jim Houston Enterprises, Larken Electronics, Chia-Chi Chao, Fred Nachbaur, Robert Fischer, Bill Heberlein, Bill Bell, C. W. Associates. | |
| For Your Support | Product announcements from English Micro Connection, TEJ Computer Products, Macshak Software, Delphic Enterprises, Pleasantrees Programming, Communications Systems Center, Toronto Software World, T Dailey, People’s Software Supply, S. J. Wyatt and John Oliger. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| For Your Support | Product announcements from C. W. Associates, Gulf Micro Electronics, Aerco, G. Russell Electronics, Melvin MacKaron, Ace Software, Rheesware, EZ-KEy, Falmouth Computer Service, Damco Enterprises, A.F.R. Software, John Oliger, Van Vangor, T-Ware, Integrated Data Systems. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| For Your Support | Product announcements from Barry Carter, Aerco, Zebra Systems, Pete Petri, JRC Software, Chia-Chi Chao, Poretsky & Poretsky, D. Lipinski Software, K. D. Lewis, American Surplus Trading, Toronto Software World, John Oliger, Rick Munday, A.F.R. Software, Sum-Ware, Al White and WMJ Data Systems. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Handy References and a SAFE-DOS File Indexer | DOSDEX file indexer. | Timex/Sinclair 2068 |
| Hardware Projects | John Oliger flyers for hardware projects. | |
| Input/Output | Letters from Paul Anderson, Dane Stegman, Jack Boatwright, Joan Kealy, Paul Anderson, Andy Barber, Peter Liebert-Adelt, Luke Perry, Don Lambert, David Lassov, Fred Henn, Jeff Burrell, Joe Rampolla, Earl Kielglass, John Oliger. | Timex/Sinclair 2068 |
| Interface for RAM in T/S 2068 I/O Ports | Requires Oliger expansion board. | Timex/Sinclair 2068 |
| JLO Disk Interface - A Review | Brief review of the John Oliger disk interface system. | Timex/Sinclair 2068 |
| JLO ROM Upgrade Review | Timex/Sinclair 2068 | |
| JLO Upgrade | Timex/Sinclair 2068 | |
| JLO with LKDOS Cartridge | Timex/Sinclair 2068 | |
| Larken Lines | Timex/Sinclair 2068 | |
| Let's Read T/S 2068 JLO Disks With Your QL | Sinclair QL, Timex/Sinclair 2068 | |
| Let's Read TS2068 Disks With Your QL | Sinclair QL, Timex/Sinclair 2068 | |
| LKDOS Off Switch (For MAX DOS Operation) | Add an off switch to resolve conflicts with Oliger NMI functions. | Timex/Sinclair 2068 |
| LKDOS vs JLO SAFE | Comparison of the two disk operating systems. | Timex/Sinclair 2068 |
| Locked Out? How to Recover! | Timex/Sinclair 2068 | |
| Locked Out? How to Recover! | How to recover when saving to a non-existent disk with Larken and Oliger systems. | Timex/Sinclair 2068 |
| LPRINT CHR$ With Oliger Printer Driver | Readers who have programmed in BASIC with the OLIGER printer driver use LET/P=0 command to send data to their large printer. This command works fine for LPRINTing text and messages but not so good for printer codes. | Timex/Sinclair 2068 |
| MAX DOS: A Study of DUAL DOS in the TS-2068 | For several weeks UPDATE has been testing two simultaneous disk operating systems in the TS-2068: the Oliger SAFE DOS and the Larken DOS. The hardware hook-up is the full “two board” Oliger system and the Larken LKDOS cartridge in the dock port. Extensive operation with the combination has revealed an almost complete compatibility between the | Timex/Sinclair 2068 |
| Meet News, club notes | Discusses attempt to duplicate Bill Jones’ Max-Dos. | Timex/Sinclair 2068 |
| Miscellany | Timex/Sinclair 2068 | |
| More About SDOS MAIL MERGE | Next issue two more functions will be added to SDOS MAIL MERGE, One will quickly let you flip through the listing to find a name or stock list. Presented will be the “Field Number and first line of the field”. These lines will scroll until you find the one you are looking for, then the | Timex/Sinclair 2068 |
| New Commands Effective with JLO Safe v2.6 | Updates to the disk operating system. | Timex/Sinclair 2068 |
| New Product News, Old Product Offers | Updates on products from Budget Robotics and Computing, ROMPAK, Hunter, Oliger, Compusa, Softmark, W. T. Associates, Markel Software, D. Lipinski, Siriusware and Ace Software. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| New Products and Services (Syntax v5 n5) | Updates from Biocal Software, Hydridion, John Oliger, Rheesware, Pheonix Enterprises, Timensa Software. | |
| Oliger 2.1 Disk System Update | Review of the 2.1 SAFE DOS ROM. | Timex/Sinclair 2068 |
| Oliger Auto-Menu | Program and suggestions to create an auto-loading menu. | Timex/Sinclair 2068 |
| Oliger Disc Drive System, Part 2 | Review of the system. | Timex/Sinclair 2068 |
| Oliger Disk System Review | Timex/Sinclair 2068 | |
| Oliger Products Column | Timex/Sinclair 2068 |
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