Gary from OPA
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Posts posted by Gary from OPA
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Well, here we are I am now officially 55 years old.
10 REM * Happy Birthday! *
20 CALL CLEAR
30 PRINT "Hello World!"
40 PRINT "Cheers, GaryOPA"
50 CALL SAY("TEXAS INSTRUMENTS")
55 ENDI'm looking forward to having another wonderful 55 years, so I can be 6 again (110 in binary).
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17 minutes ago, OLD CS1 said:
I have a set of disks for the P-Code card. They are marked with a sticker which says, "For Internal Use Only, Not For Resale."
Is there any historical reason for these to be special?
Maybe a early beta test release. Or the later control data version. Make a disk image of them and then we can compare to the current known ones.
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23 hours ago, jrhodes said:
Does anyone have a palette file that i can import into Gimp to limit a image to the exact colors of the TMS9918?
Some more info:
1.1) Colours Taken from mess/vidhrdrw/tms9928a.c in MESS, by Raphael Nabet. The first 3 columns are taken from the TI datasheet (in volts). The next 3 columns are based on this formula: Y = .299*R + .587*G + .114*B (NTSC) The coefficients are likely to be slightly different with PAL. I assumed the "zero" for R-Y and B-Y was 0.47V. The last 3 coeffs are the 8-bit values. Colour Y R-Y B-Y R G B R G B 0 Transparent 1 Black 0.00 0.47 0.47 0.00 0.00 0.00 0 0 0 2 Medium green 0.53 0.07 0.20 0.13 0.79 0.26 33 200 66 3 Light green 0.67 0.17 0.27 0.37 0.86 0.47 94 220 120 4 Dark blue 0.40 0.40 1.00 0.33 0.33 0.93 84 85 237 5 Light blue 0.53 0.43 0.93 0.49 0.46 0.99 125 118 252 6 Dark red 0.47 0.83 0.30 0.83 0.32 0.30 212 82 77 7 Cyan 0.73 0.00 0.70 0.26 0.92 0.96 66 235 245 8 Medium red 0.53 0.93 0.27 0.99 0.33 0.33 252 85 84 9 Light red 0.67 0.93 0.27 1.13! 0.47 0.47 255 121 120 A Dark yellow 0.73 0.57 0.07 0.83 0.76 0.33 212 193 84 B Light yellow 0.80 0.57 0.17 0.90 0.81 0.50 230 206 128 C Dark green 0.47 0.13 0.23 0.13 0.69 0.23 33 176 59 D Magenta 0.53 0.73 0.67 0.79 0.36 0.73 201 91 186 E Gray 0.80 0.47 0.47 0.80 0.80 0.80 204 204 204 F White 1.00 0.47 0.47 1.00 1.00 1.00 255 255 255
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Meanwhile, in my neck of the woods this meme is correct...
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Just now, OLD CS1 said:
Done.
Thanks for that.
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16 minutes ago, Tursi said:
As for the download link above - please don't repost my software. Would prefer to only support the latest version
Sorry about that. Maybe a moderator can remove the attachment. I put the direct url to your site. I can't edit the post in this forum.
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Just now, OLD CS1 said:
Too much of a fire hazard...
led candles with pic making the leds flicker like a flame and a sensor to detect your breath when you blowing them out.
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I want to see candles and cakes when I logon in a hour to the weekly ti99 zoom call in honor of my 55th birthday tomorrow...
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23 hours ago, jrhodes said:
Does anyone have a palette file that i can import into Gimp to limit a image to the exact colors of the TMS9918?
Check out this neat program by @Tursi called Convert9918 it does wonders to match the color set on the 9918.
http://www.harmlesslion.com/software/convert9918/
QuoteThis program can convert most modern graphics into a form compatible with the TMS9918A bitmap mode. It supports a drag-and-drop interface and handles resizing and scaling, several forms of user-configurable dithering, adjustable color selection, and more.
It also supports multi-color (64x48) mode, a dual-multicolor mode with flicker, and a half-multicolor mode that flickers multicolor with bitmap to get more colors.
Finally, it also supports two palette modes for the F18A VDP replacement - a 16-color palette mode, and a per-scanline palette mode (this mode uses most of the VDP RAM and requires the GPU to update the palette every scanline, but because it runs on the GPU the host CPU is not impacted at all!)
While it supports writing raw data for pattern and color tables, it also supports writing MSX SC2, Coleco CVPaint, Adam PowerPaint, ColecoVision ROM, and TI Extended BASIC images.
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Going thru all my archives of information, I came across this CD-ROM from TI and thought it would be best to archive it and share it here, for those that might have a board using the powerful TMS320C80 MVP chips!
QuoteThe TMS320C80 MVP (multimedia video processor) is Texas Instruments first single-chip multiprocessor DSP (digital signal processor) device.
The MVP contains five powerful, fully programmable processors: a master processor (MP) and four parallel processors (PPs).
The MP is a 32-bit RISC (reduced instruction set computer) with an integral, high-performance IEEE-754 floating-point unit.
Each PP is an advanced 32-bit DSP; thus, in addition to having similar processing capabilities as conventional DSPs, each PP has advanced features to accelerate operation on a variety of data types.
The MVP supports a variety of parallel-processing configurations, which facilitates a wide range of multimedia and other applications that require high processing speeds.
Applications include image processing, two- and three-dimensional and virtual reality graphics, audio/video digital compression, and telecommunications.
Sadly, its from the era of 1994 so it no longer works in today's Windows. I don't have a virtual machine setup yet with older windows to test it, and see what info it offers. But thought it would be best to share it.
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12 minutes ago, OLD CS1 said:
Cheap for pick-up, but Monopoly$51.36 shipping?! Crikey!
Only 37 usd for shipping. But yeah not worth it for me with the 51 cad in shipping or I will try.
It ended at 13.50 usd plus of course shipping
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We just had like 6 coronal mass ejections from that sunspot AR3664. We're getting auroras for the important parts of America (and probably most of Europe). So, go outside tonight for a once in 170 year treat!
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23 minutes ago, Vorticon said:
Looks like it's nothing more than an ADC using a resistance ladder. That said, how does it separate complex waveforms and determine what goes to each channel on the sound chip? I've used resistance ladders for a DAC in an oscilloscope graphics project a while back...
It does separate anything and there no channels like a sound chip all it does is play the mono waveform in PCM format out, you can see more on how it works in the Covox wiki link I put in the first post.
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1 hour ago, ti99iuc said:
interesting!
I have the original package and always been curious to know more about it
That's nice. Can you check your original floppy and upload a image of it to this thread. I am curious if it's v1.03 source I released or a later one that I didn't archive.
And PDF of the included paperwork would be cool to add to this thread as well.
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🚨BREAKING🚨: For the first time ever, Olive Garden is doing an in-resturaunt promotion in partnership with an upcoming movie release!
The first one in the restaurant's entire history is for the Garfield Movie, coming to theaters May 24th!
https://m.olivegarden.com/specials/garfield-movie
Oh'well, too bad there is no more Olive Garden in Canada, would have been a great way to celebrate my 1 year of freedom in Canada, as Gary is in fact is originally a short form of Garfield and my dad was named Garfield so he always loved the comic strip and I love pasta!
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3 minutes ago, speccery said:
Thanks for the interest - and looking at the thread, it is a very long one by now...
I'd be happy to deliver you a board, I should have a few immediately available and if not I can put together a couple over the weekend. The price is 50 EUR + shipping. Please note that all boards are hand assembled by me so should be treated as prototypes. Having said that, I take all boards I've sent through an extensive test list and my understanding is that they all have worked fine.You have probably seen the wiki at GitHub , it should give you a pretty good idea what to expect.
Thanks I will send you a private message with my address and info tomorrow so we can figure out shipping costs and go from there.
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Off-Topic / Dumping Thread
in TI-99/4A Computers
Posted
We all heard about the Apple Vision Pro.
Well our good old TI VDP Guru Karl himself has written a great technical writeup about it.
https://kguttag.com/2024/03/01/apple-vision-pros-optics-blurrier-lower-contrast-than-meta-quest-3/
Some good reading there. For those newcomers here Karl is the amazing engineer that greatly helped in producing our TMS9918 and later on the TMS9995 before moving onto the 320 and 340 series of DSP chips with TI.