MrMartian

Yes, as you say it's a fancy way of skipping the CLC. If you enter at NMI, you get SEC, BIT $18, PHA ... etc.. IRQ gets you CLC, PHA, etc... Skips the instruction without a jump.

Two full kits, please

I've built one into my 1200XL. I'll send pictures later today.

Not there, it's one of the discrete chips towards the back of the drive.

SRAM and DRAM work differently, you can't replace one with the other.

Having .car files means no guessing on exactly what type of cartridge image it is, as the header contains that information. The Atari itself can't use it, emulators can. I have all my ROM images in .car format, as a) emulators like it, and b) my Ultimate Cart likes it. No guessing..

Any plans to make a replacement CPU card for the 800?

Hmm, true, that's probably out of the boot sector. So disk yes, SDX no. Hmmm. So it's possible that when I reboot, it was disabled, and thus stays disabled. Any way to put an option into your BIOS to re-enable it every boot if we ask it to?

Here's something I noticed with this new BIOS.. 800 w/ Incognito.. Often, when I reboot with SHIFT (cold boot), I have no PBI (Error: No DOS from SDX) If I go into the BIOS settings, everything is on. If I just reboot, still no PBI but if I do X to save and exit, it's all back.... ?? Also, turning it on today, again there was No Dos. But, when I went into settings, everything was a bit wonky.. It came up as Coleen w/ 16k (not XL/XE with 1088K as usual) and the menu icon showed SIDE not PBI... ????? Took a power cycle to get it back to normal... Anything I can test?

So far, in my limited testing, everything's working okay! Excellent work! I hope to have more time to play in the next couple days...

Hey guys, I've almost got all my s(tuff) together to produce these here in Canada. I've got most of the components, but haven't had the time... Hopefully soon!

I would love to comment on your instructions. The best thing I can say now is, I wish I had done this instead of actually reprogramming the PIC directly, which was the only way back then..

The concepts, yes, but the actual code unlikely... Until I see code / schematics, I don't know how the serial is done to see if US is possible...

And if I had a ROM dump, I'd look at adding Ultraspeed to it...

That wouldn't be the 800 as it's properly issuing commands out the SIO port (or else the drive wouldn't try to read).. Have you tried cleaning the heads on the drives?

Looks like a Happy clone....

Any chance of just the individual .car images? People can make their own MaxFlash cart, and (at least) I would prefer them seperate... ???

A few observations... FJC's _boot.rom fixes the keyboard repsonse problems on my 1200XL.... But, using ctrl-shift-up/down to go to the start of the list/end of the list doesn't work for me on any of my systems....

I just started using the cartridge in my 1200XL and noticed this myself. It didn't do it at all in my 800XL, or Incognito'd 800....

Is there a way to set up pull-up on the output pin of the FPGA?

Yes, I hope to order the boards and parts this week. As soon as I have some built, I will figure out my price..

Is there room in the shell for the ROM to be in a socket? That way we could remove the chip if it needed to be reprogrammed...

One please.

Working good for me on an Incognito... Excellent work!

Exactly. What memory range does Basic XL (or Atari basic for that matter) use for the keyboard / entry buffer? I can only assume something is getting corrupted in memory, and when you press Return and it tries to parse what it has, it blows up. IE: if there is a problem with A10 stuck one way or the other, than $0000 could equal $1000, $2000 = $3000, etc, so that a write to $1000 could wipe out $0000... Or something odd like that. That's what I'm trying to wrap my head around. It can't be caused by one of the ICs as they've all been swapped.. ?? I didn't find a continuity problem, but that's the only thing I can thing of that would cause this.