jedimatt42

Ah, back to ebay then... My earlier post has been edited so I don't mislead anyone. The 3 that is supposed to be an 8 still looks more like a 3 than the cut off 0 with it's diagonal in the font. Lets check the rest now ( I no longer trust my ability to read ): 5x 0.1uf tantalum capacitors 1x 47uf electrolytic capacitor 1x 100uf electrolytic capacitor 1x 220 ohms resistor ( I'm assuming a 1/4watt will do for both resisters ) 1x 22uf tantalum capacitor 1x 1k ohm resistor 1x 7805 voltage regulator 1x heat sink for voltage regulator 1x LED 1x 74LS125 Quad bus buffer ic 1x 74LS138 3 line to 8 line decoder ic 1x 74LS32 Quad 2-input OR gate ic 1x 74LS04 Hex inverter ic 1x 74LS612 memory mapper ic 2x 62512 SRAM ic 1x 74LS259 8 bit addressable latch ic 1x 74LS08 Quad 2-input AND gate ic 3x 74LS244 Non Inverting Buffer/Driver ic 1x 74LS688 8 bit magnitude/identity comparator ic ( Noted alternative: 25LS2521 ) 1x 74LS245 Octal Bus Transceiver ic 1x 555 timer ic 1x 8pin dip socket ( 2x4 ) 1x 40pin dip socket ( 2x40 ) 2x 32pin dip socket ( 2x16 ) 4x 14pin dip socket ( 2x7 ) 2x 16pin dip socket ( 2x8 ) 5x 20pin dip socket ( 2x10 ) and a bit of thermal compound for the heat sink. Is this correct?

Chips on this board that the minipro TL866CS will not test are: 555 74LS6838 74LS612 I am almost done building my board, just waiting on a heatsink for the voltage regulator, and the Topwin to test my 612s. Since it is a 1 meg board, instead of headers and jumpers, I'm just soldering in trimmed off leads from the capacitors. Saving my jumpers for cart boards In case anyone else has trouble reading one of the labels... The board labeling for the 74LS04 (next to the 74LS612) has the zero cut off just perfectly so it looks like it says "74LS34". I wouldn't have noticed except I double checked it all against the picture Omega took over in the PNW Fest West thread: http://atariage.com/forums/topic/248617-pnw-ti-994a-fest-west-2016-april-30th/?p=3488028 Nice zoomed in picture! You can tell it isn't a 3 printed on the pcboard if you compare against the 3 in the 74LS683 labeling for the chip below it. These little print defects from the pcboard printers are not necessarily consistent. So it might just be me. Other than that little eyesight problem, the board is very almost self explanatory to build. [email protected]

I will have to dig through gamebase and find some favorites to compile. [email protected]

Adoption would be higher, if development tools like one of the BASIC's worked with it naturally. Where by naturally I mean the language figures out when and why to bank instead of requiring the programmer to perform memory management operations, such as with RXB. TurboForth actually looks like one of the easiest ways for developers to access it without changing much about how they code. ( Except if changing how you code involves learning TurboForth ) There was some prolific Advanced Basic programmer from what I've read about the Geneve. BASIC that is naturally unshackled would be awesome. Did the Powertran Cortex BASIC have any memory paging before it was ported over? [email protected]

Slightly off topic, you'll have to forgive me, but: Happy Star Wars Day! On this, May the Forth. [email protected]

That T-shirt design popped into my head immediately after reading Omega's "Rat Farts!" topic title before I could even read what the thread was about. My daughter's response, "Why?!" ElectricLab had a nice TOD T-shirt on for the event, which of course you can see in his presentation video. I'm glad I didn't wear that one, it would have been awkward. Also, CantStopClicking wore a vintage CorComp swag tshirt. Other suitable t-shirts were adorning attendees, but I don't remember any other TI specific ones. [email protected]

At the end there, I power cycled the solar powered Logitech keyboard, and typed "It works!" into TI Basic, and it did. The contrast projecting on the wall with my pico projector just wasn't strong enough, The background noise is probably the projector, and/or the jump start battery w/inverter that I ran for AC power. That was all battery power. Nice edits again, Omega! One more to go! [email protected]

Ksarul, For those of us building boards, I'd like a recommendation on a IC logic tester that can test the 74LS612N? The eprom programmer I have, the TL866 MiniPro, does some IC logic testing, but it doesn't cover that chip, and lacks coverage of a few others. Any advice would be Awesome! [email protected]

Turboforth documentation has this word: http://turboforth.net/lang_ref/view_word.asp?ID=112 And I think the URL above, has been moved to here: http://turboforth.net/resources/sams.html [email protected]

For the curious, I have an old AMS 128k/512k card, ancestor of this new board. So I thought I'd share some of the literature that came with it. Sadly, most of it is on disks, for which I have no 5 1/4" drives to read them from. I don't know if these are 90k disks, or if they are even able to read 23 years later. There is some software from the sw99ers edition of the boards here: http://ftp.whtech.com/datasheets%20and%20manuals/Hardware/SAMS/ And here is the paper documents that came with my old board... They speak of an Extended Basic III... AEMSv1.2about-disk.PDF AMS128-512.PDF [email protected]

Well, there you go Schmitzi... there were gremlins... [email protected]

The only fair gremlin I witnessed out of all of it, was that my solar powered wireless keyboard needed to be power cycled. I didn't even try to demo the keyboard live while Omega was recording, cause I assumed a fair gremlin would get me. Not so much a gremlin, as learning that solar devices need a little time after being stored in a backpack. [email protected]

That was a real smart idea, using two cameras! Nice editing Omega! [email protected]

This was indeed cool. Since you surprised us by proving that the bar code wand was compatible with the USB keyboard adapter, I am curious what kind of wand was it? [email protected]

I don't think the new sams board will fit in the shell for the 32k card, as it extends out into the support rails for the card cases. I feel like a winner, cause I was able to buy a blank pcboard through arcadeshopper on site! I'll be building this and learning what I can do with it. On another note, it was great to meet so many of you, and learn your stories. Thanks for setting this up Omega! [email protected]

-Sounds- like there is still room for some words on speech and sound. [email protected]

If MS could make it work on a 4a, just imagine how well it would perform on a PC cpu...

Oh man, I almost forgot about it... Wait, no that wasn't Fest West I almost forgot about... I've been eagerly anticipating this for months. I hope nobody has really forgotten... that would just be sad. [email protected]

Honestly, to lay that out on stripboard, I don't think it would fit very well in the console. You can give it a go though! The schematic is here: https://github.com/jedimatt42/TI-99-usb-keys/blob/master/TIUSBKeys.sch You can also pay $22 to OSH Park, and they claim to ship international for free... https://oshpark.com/shared_projects/tlkbFvs3 [email protected]

Yep! definitely. I didn't know that until you sent me the photo of how you had your diode wired up, but it is obvious now. Maybe I can prototype an adapter by Saturday... [email protected]

You can most likely use a pretty broad range of diodes fro the alpha-lock fix on the TI keyboard... It doesn't change quickly, so it is ok if it is slow. I believe the requirement is just that it is able to block anything below 6V to be safe. The switches on the TI keyboard engage pull down resisters on the motherboard. But this is great confirmation that yes, my adapter chokes without this mod ( unless the alpha-lock is kept off ) -- I'll have to update my project page to declare it a pre-requisite for optimal behavior. Somewhere here... http://atariage.com/forums/topic/242504-joystick-up-alpha-lock-fix-for-stackpole-keyboard/?hl=%2Balpha+%2Block&do=findComment&comment=3316887 <- the mainbyte link, and pictures of how to cover the stackpole-keyboard that wasn't covered by the mainbyte link. Oh, something else interesting here, is how Greg had the alpha-lock fix in cable from the keyboard to the motherboard. Which I didn't see documented anywhere, but that looks like a vendor independent approach ( unless you are trying to use my keyboard adapter as well ) [email protected]

For some reason I thought the motherboard keyboard connector was for a different spacing, but once I got home, it is the standard 0.1 inch / 2.54mm spacing. The difference is that the header on the TI motherboard has longer pins than standard headers. The TI keyboard connector will connect to the shorter headers. And the shorter http://smile.amazon.com/Hilitchi-2-54mm-Dupont-Connector-Housing/dp/B01512L8TS/ref=sr_1_10?s=electronics&ie=UTF8&qid=1461729883&sr=1-10&keywords=2.54mm+dupontconnectors will connect to the motherboard's long header, just doesn't need to go all the way on. You could get a pre-fab set like: http://smile.amazon.com/uxcell-Female-Jumper-Cable-Wires/dp/B00D7SDDLU/ref=sr_1_1?s=electronics&ie=UTF8&qid=1461730590&sr=1-1&keywords=2.54mm+connector+female+long I don't know if there are things like the dupont connectors that fit the longer headers better, but that might not be necessary. [email protected]

That is impressive. Do you have plans for that space lined up yet? [email protected]

I am curious, what were the use cases for the CPU idle switch? Was it a cool off companion to the turbo? Has anyone ever reported CPU failure after running the turbo crystal?

Here is the switch box innards all drawn up. I'm surprised by the asymmetrical relationships. But that is what I see. [email protected]