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Member Since 29 Sep 2010
OFFLINE Last Active Yesterday, 8:14 PM

#3966802 A TI'er in need

Posted by Ksarul on Yesterday, 12:07 PM

John's Geneve is one of his few true hobby loves. Having it functional again would keep him enjoying life until he's no longer of this world, so that makes it really important in my eyes.


Unfortunately, I don't have a spare RGBA monitor, or I'd send it on--but let me know what help you need and I'll see what I can doo Beery.

#3966415 The Gram Kracker mega thread

Posted by Ksarul on Sun Feb 18, 2018 9:18 PM

For those needing the instructions for Heiner Martin's Cartridge board in English, here you go.

Attached Files

#3966120 Quality 99 Software wanted

Posted by Ksarul on Sun Feb 18, 2018 3:04 PM

Quality 99 Software would always leave one sector on one of the unused tracks unformatted and set pointer-wise to the number of one of the other sectors on the track. Then the program would try to access the sector several times as a test--if at least one of the tests hit the bad sector, the program assumed the disk was genuine. If all attempts found the sector--it assumed the disk was fake and exited the program.

#3965590 OT: pɐǝɹɥʇ ƃuıdɯnp ;)

Posted by Ksarul on Sat Feb 17, 2018 9:50 PM

Digital Archaeology at its best!

#3965456 List of TI Cartridges

Posted by Ksarul on Sat Feb 17, 2018 7:06 PM

I could probably send you my list, @Sinphaltimus. That divides all cartridges I have ever caught wind of the existence of by name, manufacturer, and part number (where known). I also include every single known case color and label variant that I've seen--and even that list is incomplete, as I keep discovering new variants.

#3965351 First Post, industrial design project

Posted by Ksarul on Sat Feb 17, 2018 4:44 PM

You are spot-on when it comes to case ideas! You can also make the bottom piece standard for all cartridge heights of the same length in the slot. That makes it easy to mix-and match heights as needed.

#3964876 The Gram Kracker mega thread

Posted by Ksarul on Fri Feb 16, 2018 11:05 PM

I have verified that the device in question was a GSIM box, Klaus.

#3964874 Any prototypes out there?

Posted by Ksarul on Fri Feb 16, 2018 11:03 PM

That little door was part of the original design. There was a 20-pin connector back there and you could put vocabulary modules into it. TI decided that the Text-To-Speech and Terminal Emulator II speech methods were a better solution, and so none of the speech modules were ever released. Some very early speech synthesizers do have the connector for them though.

#3964131 The Gram Kracker mega thread

Posted by Ksarul on Fri Feb 16, 2018 9:20 AM

Based on the Description, what he had was probably one of the aluminum pizza-box GSIM devices. More questions--and a picture of one of the devices we already have within the community, would probably fully clarify the matter (or send us on a hunt for another new TI-Internal device).

#3963746 I want a TI version of these mugs! How about you?

Posted by Ksarul on Thu Feb 15, 2018 9:23 PM

They Live is definitely a classic. And the bank scene is absolutely priceless. . .

#3963742 Any prototypes out there?

Posted by Ksarul on Thu Feb 15, 2018 9:15 PM

The board would definitely be somewhat larger to put them into the beige cases. Based on the fact that the HexBus Interfaces were supposed to hit the street before Christmas 1983, IIRC, it actually made sense to do all of the molds at the same time, as they were just minor variants of each other.

#3962283 TI Related -- Ebay / Heads Up Notice

Posted by Ksarul on Wed Feb 14, 2018 5:46 AM

That is an MPI Model 51, also known as the "disk chucker" due to the tendency to send the disks flying out of the drive when opening the door. It is a solid, reliable drive though. . .and there is also a double-sided version, model number MPI-52, but TI didn't supply those for the PEB, you had to buy them from third parties.

#3962058 TI Related -- Ebay / Heads Up Notice

Posted by Ksarul on Tue Feb 13, 2018 8:41 PM

The dreaded Mitsumi Keyboard -- in Black.

#3962005 Horizon RAM Disk

Posted by Ksarul on Tue Feb 13, 2018 7:00 PM

The Horizon layout is next on my list, as I have authorization to make more of those.

#3961225 What?

Posted by Ksarul on Mon Feb 12, 2018 10:23 PM

Almost all TI prototype cartridges in the wild are actually qualification units (equivalent to lab loaners and review copies for other systems). The board inside will be a production board, and the cases can be all kinds of crazy oddities (two-color, single color in a color never used in production, single color of a type only used rarely (like the blue, yellow-orange, or red cases used for some Scott Foressman titles), or standard release cases). Labels will often be handwritten, but some will be typed, and an even smaller group will have production labels on two-tone cases. Look carefully at the color of the Car Wars case above (I have that one). Notice how bright that white is. I have only ever seen it used for qualification units. One other note on the initial rarity of qulification units: between 150 and 175 if each cartridge would be produced in a qualification run. The purpose was to verify that the line could assemble them properly and that everything ran smoothly. Most of them never made it into the wild. In all the years I've been watching cartridges, I've never seen more than about half a dozen survivors of any given title as qualification units.


One note here: there ARE TI prototypes as well. Thesse will have EPROMs on an EGROM circuit card. I have several bare EGROM boards and half a dozen cartridges built on assembled EGROM boards (one of which is a copy of Parsec in a red case that I found in a Maryland thrift store back in 1995 for the princely sum of $1.49, along with a mutant black text on white background label Star Trek cartridge). Sometimes, you just have a lucky day, and that was one of mine. I bought my first Tomy Tutor there too. . .that was more expensive though, as they wanted $29.99 for it.