Kchula-Rrit

Maybe it's clogged with blank ink? K-R.

How about the 838-IO Plus from Shift838? It eliminates the "fire-hose" cable that sucks up a lot of desk space. The cable comes out the back of the unit. You can get it with a five-foot-long cable and put the PE Box where you want or have room. K-R.

I thought I said something good. Or, did I goof again? That seems to happen so much these days. K-R.

The CF7, I assume, is a parallel device. The NanoPEB, I assume, is serial device. At least mine is. I've heard that the TI floppy disk controller DSR is very similar to the "DSK" part of the NanoPEB. Is that true for the CF7? I was using Theirry Nouspikel's disassembly of the TI disk controller in my attepmts to decipher the NanoPEB DSR. K-R.

I whole-heartedly agree. K-R.

I use a GAL for the bank-switch and RAM-ROM address decoders, so it could probably be changed to use the FinalGROM addresses of >6000 and >6800. The RAM is fixed at the upper part of the cartridge space. The GAL could probably change the RAM start address for 1K, 512 bytes, or 256 bytes. All RAM banks start at the same address; if I wanted otherwise, I'd have to make some kind of mapper like the SAMS board uses. Can't make the RAM portion any larger without using a different RAM chip. That would mean re-laying out the PC board. K-R.

I haven't thought about selling them, haven't the slightest idea of how to go about it. It would be great if people find it useful, it would be my contribution to the little computer that refuses to die. This might be making a mountain out of a mole hill, but I don't want to rip-off someone else's work. In a sense I already am, because I've used DiskAssembler to disassemble some programs to see how they work, to find out how others have approached similar programming problems. I don't know when the last version of C99 came out, but I feel weird admitting to having disassembling the run-time files (CFIO, etc) to source code to find out how it works. Haven't tried re-assembling it yet. Just hacked the start-up file to make the screen white on black, instead of white on blue. K-R.

Bragging rights, I guess. I've been wanting to make my own cartridge for a few decades and figured "it's time to fish or cut bait," as they used to say. If it turns out to interest people here, that's an added bonus! Call it my own contribution to the group that's given me a lot help and good advice. K-R.

Thanks, Guys! I was just curious. K-R.

So, that's what I see on America's Funniest Home Videos! (I call it Pratfall Theater). Must confess, it's amusing watching people walking into walls and stuff-- only because it isn't my $2000 TV that got knocked over and broken... K-R.

Those of you who make PC boards, do you try the circuit(s) on a breadboard first? Just curious, as my little cartridge circuit is turning into a rat's nest pretty quickly. Caught lots of mis-wires in the process. At least power and grounds are in the right places! Can't imagine wiring-up a disk controller or video unit on a breadboard. K-R.

I've gotten the circuit for my RAM-ROM cartridge on a breadboard and am going to try programming it. It uses a modified non-inverted Guidry bank-switching scheme. It has ROM from >6000 to >6FBE (first 7K) and RAM from >7C00 to >7FFE (top 1K). Writing to an even address in the >6000 to >607E range sets the ROM bank-address to 0->3F. Writing to an even address in the >7000 to >707E range sets the RAM bank-address to 0->3F. I've read Stuart's page about Guidry cartridges and think I've figured out a scheme to do it. Wanted to find out if there are any "preferred" conventions for doing the bank-switching. This is, of course, dependent on my PLD being programmed correctly. I'm in uncharted territory here, in more ways than one. K-R.

Thanks for the confirmation! So, I'm not nuts... The Moon orbits at 2000mph/3000kph, so Mach 2-3 makes sense. I just figured it's too fast to see with the eye. I was all set to do the camera thing, but just decided to enjoy the experience! Didn't see the waves or the sun sickles (no trees where we were). In 2012 we went to an annular eclipse at Lassen National Park, and had sun sickles. Cool. The Better Half agrees with you. My thought was that the sky was still pretty bright-blue, while the yellow sunshine was diminished so much that the blue showed. Sort of how shadows appear bluer in winter up here when the Sun is only 20 degrees above the horizon at noon. I remember reading of a war being stopped because both sides were terrified. Probably thought the gods were mad at them for picking a fight. K-R.

I should clarify that the "disappointed guy" was someone who'd posted an ad, back in 1987 or so, to sell his two consoles and loaded PE Box. He had been hoping to write games for the TI and sell them, but gave up on the whole thing. Everyone on this Web-site has been great! K-R.

That solder joint on yours, to the left of the four-pin connector, looks pretty gnarly. I'd suspect it. K-R.