Jump to content


  • Content Count

  • Joined

  • Last visited

  • Days Won


kl99 last won the day on August 24 2019

kl99 had the most liked content!

Community Reputation

839 Excellent

About kl99

  • Rank

Profile Information

  • Gender
  • Location
    Vienna, Austria

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. it got already shipped to your place? which CPU chip is inside? is the mainboard fully populated or are chips missing?
  2. Incredible document. Thank you so much for its preservation. I didnt expect it to be more than 20 pages but this is huge and reveals why they planned TI Basic like it came and why Extended Basic looked like it did. I need time for studying it.
  3. Congrats Ksarul. Please please preserve and share the rom and grom of this unit so we can try to make a emulated preservation. I assume it comes with a TMS9985 Cpu, Video Input on the 5pin Din port, no digital joystick port and that the mainboard actually has a slot for the infrared interface, and it might not have full 16k of video ram. At least this would match the documents from CB Wilson.
  4. I assume TI had more protection around 99/4 prototypes than 99/8 and 99/2 as the company was aiming for money and marketshares while the 99/4 was done and trying to avoid Industrial Spionage. When they left the Market in 1983 the interest to protect the products did go down for sure. But at that time hardly any 99/4 or Dimension 4 survived the Engineering Labs or got stored away already in 1979 and never went back to the Labs or the Employees.
  5. usually the faulty chip is super hot.
  6. kl99

    TI Forums

    If people guide you to atariage for TI they mean the given forums by jedimatt. There is no other TI only forum on atariage, only single threads at the fleamarket maybe.
  7. I would consider the main document and the appendix as two different pieces, from their status, date and writer group. Therefore I thought it worth noting that the main document is not referring the GPL language as such. Also there are contradictionary specs between those documents. While the appendix states that the Speech Synthesizer will get 250 internal words. The main document says it will be 600 internal words. That just one example why to treat them seperate. The so familiar joystick port is no where in the Appendix, not mentioned in texts nor in the figures. We only see on pdf page 115 which value a keyboard input (arrows) would get and it is the familiar -4, 0, 4 integers. So my assumption the last minute decision to have a digital joystick port did not take much, but send a similar signal like the keyboard would. Extraordinary I find the statement on page 87 that the GPL language was developed at TI, specifically for the Home Computer. If this is the case, how would Microsoft/Greenberg gets involved with a Basic Interpreter in Gpl language and solely for a TMS processor?
  8. Thanks again for preserving this document. Here are some notes so far. Document Date The White Paper has no date as such, or at least I didn't discover one yet. It refers an Appendix A from July 24th, 1978, so it is at least as young as this. The White Paper refers 08/31/78 as Date for a Figure (pdf page 61), indicating the Document is younger than this. The White Paper Page 20 (pdf page 38) refers to a future Q1/79 date, indicating the Document is older than this. So the date of the document must be somewhere in Q3/Q4 1978. TI-99 so far I only went through the main document. There was no mentioning of the name TI-99. GROM The GROM is a main part of the TI Home Computer, already in the White Paper from 1978. I didn't see a reference to GPL in the main document. On Page 11 (pdf page 18) GROM is set as TI software strategy. TI Basic TI Basic is already the name established for the BASIC Interpreter of the Home Computer in this White Paper from 1978. UI Limits When using Module Software for the TI I often wondered why the developers forces the user to switch between Keyboard and Joysticks input when staying in one game. The remote keyboard would have had eliminated this issue. Software Module Library On Page 18 (pdf page 28) a Software Module Library is referenced. My assumption is that the Review Module Library is the Software counterpart to exploit this peripheral. Yet another White Paper On Page 1 (pdf page 4) refers a White Paper from May 6th, 1978, describing the complete Personal Computer product line. In contrast to that the CB Wilson White Paper is dedicated about the Home Computer product line. Home Computer BASIC On Page 15 (pdf page 22) it is said that the SR-60 and the SR-72 are programmable in supersets of the Home Computer Basic. THE BASIC TUTOR On Page 15 (pdf page 22) a GROM for The Basic Tutor is referenced. Afaik this cartridge was never released. No Joystick Port Figure 7.5 (pdf page 34) shows no Joystick port. I mean the digitial one that ended up being there in the production model. 64K RAM Expansion Figure 7.6 (pdf page 35) shows a planned product RAM Expansion with 64K. Product Specification Home Computer System Appendix A - Product Specification Home Computer System - is actually a document we are aware of, at least in a more recent revision. This shows the revision of July 24th, 1978. The Cyc contains a revision of the same document from May 29th, 1979. The later revision already refers to the Home Computer as 99/3 and 99/4.
  9. My guess is that this documentation was created for a machine not ending up the 99/4. The approach was withdrawn, otherwise we would have seen references to it in all other internal TI Basic Specifications. There were many computer projects being specced and started, which competed with each other. I did go through the TI Basic Interpreter Design Specification again, and I simply can't imagine having Microsoft coming up with a Basic Interpreter fitting nicely into a GPL interpreter which interacts into the Monitor System. So my guess is that this is a non GPL based TI Basic, maybe for the 9985, maybe for the Z80 or meant for a business machine or a 990 mini. We know for a fact people working in bouse on the 99/4 Basic Interpreter. @Toucan can you make some photos of the first pages, alternate making a video going page by page through the document. Shouldn't take more than 15 min to browse through 100 pages and get it to youtube.
  10. It is not about having a wireless digital joystick (-4, 0, 4), but this attempt of TI was about analog joysticks (-4,-3.9,-3.8,...-0.1,0,0.1,...3.8,3.9,4.0).
  11. Yes, biggest delay for the TI-99/4 was the FCC that blocked a release without a certified modulator. That is why they came up with the requirement of a bundle with the 99/4 monitor. Of course you need to find a partner, brand it accordingly and that was totally changing the price category. Only later the modulator was certified and the 99/4 was allowed to be sold without the monitor. According to some TI employees the FCC actually delayed releasing specifications to aquire a certification for the modulator, which if true makes a certificate not an easy and fast task.
  12. This whole page about the Handhelds for the 99/3 and 99/4 is also covered in the Peripheral product specification, part of the Product Specification for the Home Computer System from 1979-05-29. This got preserved within The Cyc from Cadd Electronics. [\vendors\ti\internal\prodspec\prodspec.pdf]
  13. The Specification of a TI standard for the BASIC Language is a document we searched for a long time. It is awesome some employee preserved it and it is awesome that you contacted exactly that guy! The Specification is referenced in the applicable documents sections from 3 known specifications: Product 359 Basic Interpreter Design Specification (Product 359 = codename for Extended Basic) TI-99/4 Home Computer Basic Interpreter Design Specification TI-99/8 Home Computer Basic Interpreter Design Specification The first document from Greenberg looks younger and is nowhere referenced in any of the known specifications. Either because the approach of Microsoft was dropped or we miss many more documents. Awesome find!!! One big specification document we still miss, dated from 1979-04-12 in Revision 4.1, is called Home Computer Basic Language Specification. Could be that this was done after CB Wilson left. Or that this is the one referring the Greenberg Documentation. Question to be asked is now: do we run a Microsoft Basic now or not? Wow!
  • Create New...