ivop

LOL, I said first few bytes, but they are indeed actually the last six bytes Yes, that's a good question. The whole ROM thing started with game consoles, but nowadays the big download sites call everything a ROM, including .d64 and .atr. Edit: even 3rd party Android images for telephones/tablets are called ROMs

Your ROM file has to be exactly 8kB or 16kB, so pad it with zeroes. I assume you know how to format the first few bytes of your cartridge ROM block? Start/init addresses etc...

Hi, Is there a way to easily "split" words into two separate tables? Here's what I mean: table .word $0123, $4567, $89ab, $cdef ; becomes: tablelo .byte $23, $67, $ab, $ef tablehi .byte $01, $45, $89, $cd With four words, it is not that much of a problem to do it by hand, but with eight or more, it becomes a burden. Especially if you are bound to change and tweak those values to match what you are trying to achieve

It looks like something went wrong with synchronizing audio and video. The audio does not match the video you see (like 1:05 drift(!)). I happen to understand what they say Hopefully you can fix this. It's great piece of television history, and image quality is nice considering how old it is!

Oh, you took this pitcure on carpeting, too!!

Oh, now I see it's also in the background of some of the other pictures. Nice! Rubbershoes right next to them. In the winter. With dry air. LOL.

Oh great, a disk out of its sleeve on the granite bathroom floor. That's $900 for sure!

Slightly jerking and then stopping makes me think it might be a power issue. I have no experience with the 810, but are there any 7805/7812 regulators on the PCB? If so, check those with a multimeter. Also check for bulging caps. Especially the bigger ones.

Yeah, sorry. I thought the Pico was a smaller Zero for a while, but I see it's a different beast.

Didn't they call it Never The Same Color back in the day? Sorry, I'll show myself out.

Yes, just like the Zero. Install Raspbian. apt-get install atari800, and you're good to go! Or install RetroPie.

In the end, it doesn't really matter at which divisor the game loads. When there's a disk version, the user and its hardware decide But doesn't the 576NUC+ emulate a cart? I believe it does, with all sorts of banking schemes. A banked cart version of PoP will obviously be the fastest, but that does not exclude a disk version. Or tape?

I should have been more clear. Anything below div6 is a lottery for real hardware computers connected to real hardware drives with upgrades, and drive emulators. There are so many combinations, and most don't work at div0. Here you name one device that works consistently on every single machine you have tested. And then you say you might have to snip some caps. Or sometimes not I think Lotharek's SIO hub proves that the signal can be cleaned up outside the machine, and probably work across the whole line of 8-bit machines. Fujinet was mentioned in this thread. I have not tested it yet, but hopefully it can cope with this without having to modify the computer. Might be that part of its circuitry and/or the ESP Rx/Tx lines mitigate this? And then there's 8N2 at div0 that improves performance when 8N1 does not work at all and stutter at div0. But that's still a software "solution". TL;DR New SIO devices should include the same signal "cleaning" Lotharek's SIO hub does

Yeah, div6 and lower is a lottery indeed. But that doesn't mean a disk version could not be made. Everybody loads it at their preferred and working speed Obviously, a cartridge would be better, and faster

Yeah, PBI drivers were a documented standard since 1984, but hardly used. Let alone a PBI driver for a SIO device. The first one I can remember is @flashjazzcat incorporating @HiassofT's HISIO in the U1MB firmware. Reaching div0 with an upgraded 1050 straight to the computer is not possible AFAIK. With SIO2SD/SDrive/etc... it's hit or miss. I have only one 800XL that works without hiccups with one partiular SDrive MAX. The rest won't go beyond div2 without cutting the caps. Maybe that one 800XL has caps that have gone bad?

IMHO it's a good to choice to not make KickC ABI compatible with CC65, because that would mean you are still stuck to the software stack and the same calling conventions. That does not mean you cannot port or reimplement CC65 libraries for KickC ofcourse

I would think so, plus a lotharek SIO hub for massaging the signal That should work with unmodified XLs, and possibly XEs.

I have the feeling that you are not on the same page, so to speak. @xxl an unmodified 800XL can reach divisor 0 if either the device has proper Schottky diodes in place (I have seen that working on a prototype of @mr-atari, even higher bitrates when Pokey is externally clocked), or if you run your device through @lotharek's SIO hub, which has similar signal clean-up in place. Edit: yes, SIO2SD should be able to reach divisor 0 with above mentioned solutions.

I see your program display 64K RAM system. Theoretically that's correct, but normally only 48kB is available, because 16kB is overlayed with ROM and hardware registers. If ROM is disabled, you get 14kB of RAM extra, but with a 2kB gap of hardware registers.

Not clipping as much with a higher volume is due to the analog nature of the audio mixer on real hardware. It goes through several opamps (at least two), and some RC filters. IIRC Altirra downsamples from 1.7x Mhz down to 48kHz in two steps. I don't recall if it does any analog simulation. @phaeron can tell you more about that. Years ago, I modelled the whole audio circuitry in Spice, including GTIA and SIO Audio In mixing into the final signal, and the circuitry in the 1010. There was this thing where somebody played music echoed through the 1010. Can't recall the details. Should be on a backup somewhere 😕 Anyway, a Spice simulation like this cannot be run in real time. But if you could record the full 1.7x MHz stream, you can run it through post-processing as much as you like, without it having to be real-time.

I have only once blocked somebody, but you still see that a message is blocked, so if you are curious.... And if it's quoted, it's not blocked. So I unblocked that person.

I think, in a nutshell, the problem is that a government run postal service has to compete with commercial services, whilst they are completely underfunded. Add millions of mail-in votes in October and November that got priority (which is good), add all the seasonal post, and packages that were ordered in December, and there's your problem.

Version 6. Not 100% true to the original anymore, but better numerals IMHO, and still in the same style. The # and * were not defined in the original font. Not sure about the asterisk, but I like my slanted hash sign Also note that the only difference between () and [] is the height of the bracket, as per the original font. micrreg6.fnt

Version 5 already Top two lines are done, and all lower case characters. Rest is left alone. Kept as close to the Micr-Font-Regular as possible, except for the X. That one really looked horrible. Like an H. Now there's 1, 2, 4, 5, 6 and 7 I would like to upgrade, too micrreg5.fnt

Just a few hours ago I was thinking about firing up Envision again, and do a font. Just for fun Should I try this one? Edit: OK, started working on it. Upper case is done. Working on lower case now. Stay tuned