The Dijit Systems Advanced Video Processor Card (AVPC) was an 80 Column card that fit into the PEB.
Along with a suitable RGB monitor turned the TI-99/4A console into a 80 Column device.

For More Info on this card please see here: http://www.mainbyte.com/ti99/hardware/peb/avpc.html

There was only one problem the original TI99 Operating System on powerup writes the registers in
such a way that it was incompatible with the new register setup of the upgraded V9938 system, so
DIJIT Systems designed a special power-up DSR located on the card’s EEPROM that tries to correct
this error, but their layout was not perfect as such we wrote a improved DSR version for others!

Inside this archive, you will find the following files:

• AVPC010-S – Original DSR EPROM coded by DIJIT
• AVPC020-S – The First Improved Version by OPA
• AVPC030-S – The Commerical Release of new DSR
• AVPC032-S – Newer 3.2 Update But Not Released
• AVPCSOB-S – Custom Version for those with SOB
• SET994A-S – Code to set 994A mode in XB Progs
• V9958-S – Super-Cart Program to Test Video!
• BackupV9T9.zip – The above files in TI Format!

Release Rules are simple, you are free to study and improved this code to use on your Card or to emulate it.
Just please remember to give correct credit to the original source of this set of Assembly files!

Thanks, for more information please contact via the following:

Our Website: http://O-P-A.biz
Our Email: support @ o-p-a . biz

Or visit one of these two forums, contact me ‘GaryOPA’ or start a thread:

My Video Gaming News & Forums: http://www.maxconsole.com/maxcon_forums/
The Best TI Programming Place: http://atariage.com/forums/forum/119-ti-994a-programming/

-=( Gary from O.P.A. )=-

TI-IMAGE-MAKER is an internal console expansion board designed to be installed in your TI99/4A with a few simple tools.

TINY-TIM (as some have nick-named it) upgrades your current TMS9918 video display processor to the latest state-of-the-art & fully compatible V9958 processor.

This processor is also compatible with the V9938 used in other existing upgrades for your TI99 console.

OPA used state-of-the-art CAD/CAE designing & top design engineers to bring you the best video upgrade for the TI in the smallest most compatible package possible.

The PCBoard containing the V9958, 192K of VRAM, a special ASIC device, a 25-pin monitor/expansion port for future video devices like digitizers, GENlock, etc. & the analog RGB video driver circuitry, has all been installed on a compacted 4″*3″ layout.

TINY-TIM comes complete with:-

• Step-By-Step User Installation Guide.
• Recommended RGB monitor guide, with detailed specs and pin-outs for many different monitors to ease in interfacing TIM to your RGB monitor.
• Graphic demos displaying the power of TIM and the new Yamaha V9958 processor with its huge 192K of video RAM.
• Our owm GIF file viewer supporting the V9958.
• Three disks packed with fairware software which support the V9938/58 chips.

Also included with TINY-TIM is the S.O.B. (an operating system replacement) & after reading over the in-depth review of the V9958 processor pasted below, we are sure you will find that TIM is the best thing ever for your TI-99/4a console.

This internal plug-in 2″*2″ PCBoard with a 16K EPROM and two ASICs, allows you to replace GROMs 0 & 1 in your TI console with OPA’s own fully licensed operating system featuring among other things:

> 100% compatible with 99/4A operating system, and expanded on from the original licensed source files from TEXAS INSTRUMENTS themselves.

> Updated to be compatible with all existing and future V9938/58 devices including of course our own O.P.A.’s TIM (TI-IMAGE-MAKER).

> TRUE LOWER-CASE character set added to all your existing modules and programs.

> 4K MICRO-MANAGER designed by OPA and fully written in GPL for cataloging all floppy, ramdisk, hard drives devices & from the catalog:

• delete, view files & run Assembly, Object, Forth, or c99 programs or launch various modules installed on your TI99 via cartridge port.

> Capable of auto-loading a disk-based program or a newly expanded system on power-up.

RAMBO is a software & hardware package specially designed for HORIZON ramdisks in your TI99/4A expansion box.

The standard Horizon is designed mainly to be a ramdisk, with >4000 based RAM (TI99 DSR space), a 6K DSR for ROS_8, & 2K RAM pages to allow easy reading & writing of sectors. This is fine for ramdisk operations, but using the Horizon memory for other applications was found by many software developers including OPA to be too difficult.

But now, OPA in co-operation with BUD MILLS SERVICES has broken this barrier in the Horizon world by designing a combination of a 1″*1″ PCBoard containing a complex PAL, & the new ROS_8, all easily installed in any Horizon ramdisk model. Using ROS_8, you can easily partion the on-board memory between RAMDISK and PROGRAM space.

Combined use of this new PROGRAM space, a function of RAMBO, and ROS_8, allows new, larger and more powerful programs to use the partitioned Horizon memory in a format better designed for direct Assembly use or execution.

(A programmers’ development package for RAMBO, is described elsewhere on this website).

RAMBO comes complete with:

• Step-By-Step User Installation Guide.
• The complete ROS_8 package (which is described here on our website), a $10.00 value.
• An earlier version of OPA’s RECALLIT 2001 (described here on our website), an $8 value.
• Two powerful & useful sample demo programs, with commented source code, and documentation.

ROS v8.14 and RAMBO Manual » Post
ROS814_RAMBO.pdf
Version: 8.14

1.6 MiB
21 Downloads
Details

Manual for the operation of Horizon ROS v8.14 and the OPA RAMBO upgrade kit.

Languages:	English
Author:	OPA
Requirements:	PDF Reader
Category:	Manuals
Date:	April 21, 2014

When John Johnson released ROS_7, it soon became standard for HORIZONs, offering more features than before & was the most compatible problem-free ROS ever; but unforeseen problems and limitations were found as new devices like V9938 upgrades, hard drives, and larger Horizons appeared. A new series became imperative when OPA released RAMBO. In co-operation with BUD MILLS SERVICES work began on a more powerful ROS package. A new operating system supporting all HORIZON models compatible with over thirty different devices was not an easy task, and many of the initial users had more problems, but now we are pleased to say with ROS_8.14, users report compatibility with all devices, except the RAVE memory expansion.

The ROS_8.14 package includes:

> Complete 30 page User Operating Manual, covering CFG, ROS, MENU, TST, and RAMBO.

> ConFiGure program allows you to load/save the ROS, partition memory between 1 to 10 uniquely numbered/lettered ram-disks and RAMBO space, change fonts, set colors, and setup custom calls.

> Ram-Operating System when loaded via CFG, controls your Horizon to interface and look completely like a floppy drive to your system.

> JJ’s boot-up MENU program allows you on power-up and exit from any program to:

• catalog disks
• view/delete files
• access custom calls
• run programs from the 24-item changeable menu
• or directly from a ramdisk catalog of its files

> OPA’s Horizon TeSTer program,is a high-speed and thorough board tester for all HORIZONs. It detects most all possible hardware failures in memory storage & support control.

This program was originally going to be released in cartridge format by TEXAS INSTRUMENTS but never done so, and with the help of OPA we got the license rights to it and now talented programming members of 9T9 Assembly SIG help expanded the dictionary and correct the existing bugs, and expanded the computer logic to make the game better and recoded slow GPL sections into pure Assembly code, and there was even a version written that also make use of the RAMBO memory to make the dictionary even much much larger.

• Displays and prints both the answer and puzzle.
• Input your own words.
• Or use the 12,000+ dictionary.

This is another unique 100% Assembly program produced back in years ’91 to ’93 and written by the 9T9 Assembly SIG which was part of the 9T9 Users Group, located in Toronto, Ontario, Canada and in which O.P.A. was lead teacher in helping members learn, from the ground up, powerful and correct programming techniques for the TI in both ASSEMBLY and GPL.

• Automatic or manual operation
• Complete with SPEECH and graphics

This is one of first programs produced back in April ’91 and written by the 9T9 Assembly SIG which was part of the 9T9 Users Group, located in Toronto, Ontario, Canada and in which O.P.A. was lead teacher in helping members learn, from the ground up, powerful and correct programming techniques for the TI in both ASSEMBLY and GPL.

Reaching this goal means understanding how quickly programs can become outdated therefore we study our software, listing what customers want added, and when possible mailing out free updates. When you buy a program from us, you are getting a subscription to these updates. This does not mean our programs need to be updated a lot. Many have not changed since they were first released, because we do spend time and effort on in-house beta-testing.
The result is a program you know can be trusted. When we update, it’s because of new features, not because we left major bugs behind.

Some information on our Phoenix 2001 programs can be now found on the following pages:

• TASS 2001
• DISKODEX 2001
• RECALLIT 2001

RAMOS was written as an updated MENU program to replace the common used BOOT program supplied with ROS v8.14 software for the Horizon RAMDISK.

But RAMOS is totally 100% new Assembly Code, produced with the help at time of the 9T9 Assembly SIG from the 9T9 Toronto Users Group, and it makes use of not just large RAMDISK’s, but also fully supports HFDC and full 16 banks of GROM Cartridges like the POP-Cart and other large GRAM devices, plus of course 80-column mode.

Again this program has been recently been recovered, thanks in part of some ex-OPA employees saving TI99 stuff for no reason, and as such we are now working on updating to support Nano-PEB and CF7+ usage and plan to make it one of our ‘public’ releases later on this year as part of our 30th birthday party event.