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Posts posted by Mehridian Sanders
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Do I need to point the path to the XGA99 as well? with all the same suffix?
xas = ["xas99.py", "-b", "-R", "-I", "D:\TI Stuff\endlos99-xdt99-9ca7531"] xga = ["xga99.py", "-b", "-R", "-I", "D:\TI Stuff\endlos99-xdt99-9ca7531"]instead of
xas = ["xas99.py", "-b", "-R", "-I", "D:\TI Stuff\endlos99-xdt99-9ca7531"] xga = ["xga99.py"] -
Something like this?I think this idea is pretty cool.
Do you know of a display that would be the right size to go across the function strip?
A character panel would be more in the spirit. I'm familiar with the 16x2 types, but a row of these would not neatly fit together to cover the whole function strip.
And I feel like color OLED would be cheating (more CPU power than the 9900, more colors than the 9918). I have one of those 0.91" 240x320 ones.
https://www.crystalfontz.com/product/cfah4004atmijt-character-display-40x4
Getting the dimensions of a strip here in a few
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Ok so, what can we do with the rest of the GPIO?

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Something interesting.. maybe an LCD screen or screens powered by arduino that switches the keyboard strips with a switch.
Yes it is somewhat needless, but a fun experiment and low level. Should be cheap to make. I know I have a few of those arduino screens floating around somewhere. Welp just a thought. Will show when prototype is mocked up
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changed the "make.py" code to include the xas99 file location
xas = ["xas99.py", "-b", "-R", "-I", "D:\TI Stuff\endlos99-xdt99-9ca7531"] xga = ["xga99.py"]Still getting the error :
Traceback (most recent call last): File "D:\TI Stuff\finalgrom99-master\ti\make.py", line 11, in <module> if call(xas + ["menu.a99"], shell=False): File "C:\Users\mehri\AppData\Local\Programs\Python\Python38-32\lib\subprocess.py", line 340, in call with Popen(*popenargs, **kwargs) as p: File "C:\Users\mehri\AppData\Local\Programs\Python\Python38-32\lib\subprocess.py", line 854, in __init__ self._execute_child(args, executable, preexec_fn, close_fds, File "C:\Users\mehri\AppData\Local\Programs\Python\Python38-32\lib\subprocess.py", line 1307, in _execute_child hp, ht, pid, tid = _winapi.CreateProcess(executable, args, FileNotFoundError: [WinError 2] The system cannot find the file specified
I am assuming I need to move a library file to the python folder in appdata. Just not sure which yet. xga99?
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8 minutes ago, Mehridian Sanders said:ok so I found the Repetto thread that showed me more about what I will need to do. I downloaded AVR, Python 3.8, and the XDT suite. Does anyone have the commands to compile for generic locations? or perhaps a batch I can run in the folder that would help me to compile this? I am better with hardware than software 😕 python is not something I have learned yet. Trying to set a batch file that I can post here to help out others who may want to make their own. TIA!
NM I just derped my facepalm....openedd make.py in notepad++ *facepalm*
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ok so I found the Repetto thread that showed me more about what I will need to do. I downloaded AVR, Python 3.8, and the XDT suite. Does anyone have the commands to compile for generic locations? or perhaps a batch I can run in the folder that would help me to compile this? I am better with hardware than software 😕 python is not something I have learned yet. Trying to set a batch file that I can post here to help out others who may want to make their own. TIA!
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Okee dokee, thank you kindly. I am hoping these can help Falcor4 with his Z80 peb card project should he wish to pick it up again.
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Well@FALCOR4 if want some replacement chips that got damp temporarily I can send you some. Gimme chip model numbers





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Please delete this thread it is ill-placed
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Ah well... not much can be done really.. but dang!
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I don have anything but hair dryers

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This may help
https://atariage.com/forums/topic/174989-my-first-z80-card-for-peb/
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This! Thank you!
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All right, well if you run into a missing component lemme know. I just found a few more.Not enough benefit, extra complexity in the system, more to fail.
The LED driver is slimmer, probably more efficient. Leaves more room in the bay for the necessary voltage regulation circuitry to provide the oddball voltages the PEB uses.
Each PEB card is specc'd to have its own voltage regulators, and thus need GREATER than +12v, +5V, and pals. IIRC, it's +8V +16V and -16V supplied by the PEB.
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Would an ATX1 power supply do? If so I can send you one or more. I adapted my first TI power lines into a Molex socket (not the standard pinout) for ease of use.I have been giving some thought to the power supply issue.
Here's the thoughts so far-- There are "Universal Laptop Cords" (ahem) that supply ~19v at quite a few amps, DC. That would be nearly PERFECT for using DC-DC regulators to derive the voltages needed for the PEB.
Take for instance, this rather inexpensive one.
https://www.walmart.com/ip/iGo-90W-Universal-Laptop-Charger/23703025
It has a keyed DC plug, which is *supposed* to accept little nibs for the various devices out there. If instead, there was a receptacle for just that plug, it would provide a nice, regulated 19V DC, keyed so you can't bodge it. From there, an internal DC-DC converter setup can derive the needed rails, which could be fabbed on some perfboard.
If not that supply, then one similar to it, since laptop chargers tend to all output ~19V. I just need to spec one that is ubiquitous, cheap, and outputs reliable 19V at sufficient wattage.
ALTERNATIVELY--
Internal PSU, that uses a 24V LED driver as the base, followed by said DC-DC converters. Such as this badboy.
https://www.amazon.com/ABI-Supply-Outdoor-Rainproof-Weatherproof/dp/B01IU8QBCO?ref_=fsclp_pl_dp_2
Sadly, it is only 82% energy efficient, and thus "Illegal" by CA's new standards. Finding a suitable DC supply might be tricky.
Not sure how efficient this one is, but it looks potentially useful too.
https://www.amazon.com/LEDENET-220VAC-Switching-Supply-Converter/dp/B00OLYAGSC?ref_=fsclp_pl_dp_7
Has fancy voltage output adjustment pot.
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Am I posting these finds in the wrong place? Sorry if so.. will remove them if directed.
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Hitachi oscilloscope V-212. 20 MHz

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I think this is Spanish. If not it is probably italian.. not sure where it came from ... Friend from high school was getting rid of fathers stuff


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Well today was a score!!!

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I am open to suggestions, even those that would paint me in the Derp category.
Also the sidecar connectors came today.
Thanks again@jedimatt42.

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I am new to the 5200 side in here. I just picked this up untested from this legacy shop around the corner from me. What should I be looking for to restore it?


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Value is perception based.

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I do like this however I would probably not be able to make that. :/Did anyone ever suggest holding the meeting at the Seattle Living Computer Museum? I know a lot of you are in the Portland area, though.
FYI, the Vintage Computer Festival Pacific Northwest (VCF PNW) is having their 2020 meeting there in March 21-22nd: VCF PNW 2020 Meeting
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StripSwitch
in TI-99/4A Computers
Posted
Ok the informational section of the strip Is 8.125 inches across. Looking for a LCD screen about that length
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