Lios

The lead went very well. I got both an A500 and a A1200 from the same guy, so I'm not looking for an A500 anymore.

For me, it's more about getting enough data to feel pretty safe spending x amount on something without there being a good chance outside of dumb luck to find it at lesser y price a week later. A pair of unsold bundles on ebay isn't much to go by for pricing on a loose, bare bones a500, but in terms of what they're selling for on ebay in europe right now, the asking prices are double or more for the few stateside listings. Now if several months down the road, it's the same story after exhausting every resource I can think of, or I'm finding dozens of offers at the same price point, that's a different story. I don't mind haggling and waiting for a better deal on items. I already have more projects than I have time for as is, anything more is just bonus if I find a good deal. If not, I haven't really lost anything for not having found what I personally consider a "good deal"

By luck, I've sourced a local seller for a not fully tested NTSC A500 with Rev 6a board for sale at a reasonable price. Meeting with them tomorrow, will update if I get it. If that falls through, I may have another lead through a friend I honestly just want something I can put a gotek drive into and load up OCS games from that. I already have an untested power supply, 1 or 2mb ram expansion (side bus and not trap door iirc, will have to dig it up out of storage to confirm), some mice, external floppies, and a pile of boxed software. New aftermarket trapdoor 512kb expansions don't seem terribly expensive if needed. I'll probably get a mister at some point, but I love tinkering with original hardware, and it's often really the only easy way to test odd/obscure peripherals designed for original hardware. I also have a pile of amiga floppies with unknown contents to go through. I don't mind spending the money for fun toys here and there, but I don't want to get ripped off. It's just hard to gauge what a US located A500 even goes for, between a few not selling BINs on ebay, and not much in more recently sold auctions. Sellers have some idea of what one is worth, but I'm not finding the buyer data to back it up so far. Just looking up Amiga computers on ebay that are available to US buyers right now returns less than a dozen listings for any model of the computers, period. Many are untested/parts ones too. Funnily, I find Atari ST and 8 bit stuff all day long, at pretty good prices at that. Hard to tell if that's because in difference between supply or demand for either Amiga or 16 bit atari computers.

After having an ebay purchase cancelled on me for an A500 from an Italian seller who it seems did not realize they were marked for international shipment, (none of their listings show for USA now after refunding my order due to a "problem with the shipping address") and only seeing a few boxed with many extras/rarer variant A500s from US sellers, I figure I'd try my luck on some forums. I haven't done deals for retro games/computers on forums for many years, but I do have an ebay account with positive feedback and have made several deals in the 2000s on neo-geo.com, pcenginefx.com, rfgeneration.com, and digitpress.com's marketplace sections, as well as on here if there's any question to my legitimacy. I honestly can't even tell what the market rate for a bare bones A500 is. The ones that pop up seem to largely be the rarer and later models, or come with a ton of extras and/or mods, expansions. Completed, sold listings on ebay are all over the place as well. I just need a plain vanilla A500. I have an NTSC A500 power supply, mouse, and external floppy drives, just no amiga to game on. Forreference, before tax and shipping, I was paying 160 euro for a pal, stock A500 in pretty good cosmetic condition with a power supply and nothing else, tested powering on and reaching the kickstart screen. I would gladly pay this for a stock, bare bones PAL A500 in good working order, so long as the shipping doesn't end up costing more than the unit itself, or close to it. I do prefer a pal unit, but will consider ntsc. I will also consider non functioning units, depending on the details and price. I do live in the US, out of Washington state, so US seller preferred, but depending on shipping costs, overseas is fine as well.

I'm trying to identify this board I picked up in a haul of various old computer items. I'm not familiar with which computer it belongs to, but I did find this old thread My board is comparatively less complex, as you can see in the attached pictures. Any idea for certain which computer/interface this connects to? I don't have a Coleco ADAM and am unfamiliar with the expansion ports on it

Just recently picked up a Microvision with one of the worst rotted screens I've ever seen. I'm very interested in one of these.

I figured I'd give this a shot; is there any interest in e3, e5 v1/v2 era Xeon server equipment? I have a lot of 8gb and 16gb ddr3 ecc registered server memory, chassis from pizza boxes, 1u to 4u jbods. Most of the boards and chassis are Supermicro, though I have a few Dells and other misc. On the high end, I have some e5-2620, e5-2650 v1/v2s (would need to double check on the v2s, I have v1s for sure), that's dual 6/8 core, threaded cpus in a board, up to 384 GB ram, several removable drive bays. I have a number of 480GB SSDs and 1-3TB SATA drives, enterprise/datacenter grade. Please keep in mind that this is all used equipment, I can provide readouts of SMART data on the drives as I know some may have a number of power on hours. I also have boards that will fit an ATX case, and the e3 cpus will fit in many Sandy Bridge or Ivy Bridge chipset boards if you want to build a beefy workstation. I'm looking for 80s-90s non PC compatible computers, game consoles and oddities. Especially interested in imports, MSX, PC88/98, Sharp 68000, FM Towns, Amiga, Atari 16-bit, Tandy computers and real oddities. If you're interested, let me know what you have. I'm aware that I have few posts despite being a member here for years, and I mostly just lurk the Marketplace. I can provide pictures of anything there is interest in, just let me know what you're looking for. I'm located in the Phoenix area and ideally this could be locally arranged, but I'd entertain cross shipment depending on what's on offer.

Would these work in other computers/consoles that use a TMS9918 series VDP that outputs YPbPr, or is this specific to the Colecovision and Adam?

Do you have any references or transaction history? I'm interested, but leery of the low post count and no record of past transactions.

Put me down for one "Assembled device - $50". How much would shipping be to 85225?

I bought an Atari 800XL computer in rather excellent condition. Communication was great, everything was packed to survive a nuclear holocaust, and he even undercharged me on the shipping. I wouldn't hesitate to deal with grips03 again.

Why not both? That way you can bump the thread when you have an update, and people who enter on page 1 will have the most updated info as well.

I've thought about the f18a, but being VGA kills it for me.

I've seen Yurkie's mod, but I'd like something that doesn't require an upscaler (especially a specific one) and keeps as close to what's output natively by the VDP as possible. If I wanted it converted to RGB, I already have my own external solutions for that. Also, Yurkie doesn't appear to offer a DIY kit, which is exactly what I want.

Color me very interested in this as well, I've long been meaning to add a component mod to my Coleco and this pre-made board looks perfect.

I meant that I tried the file intended for Classic99 on real hardware for the hell of it, even though as you explain earlier, it's designed specifically to work with how Classic99 expects things to be. It was more of a 'why not?' than anything at the point I tried it. I haven't tried the backwards file in Classic99 at all. Is there a particular PLCC flash you'd recommend yourself over the 29f040, if it happens to be the problem? Actually has anyone else tried this on an ÜberGROM board and gotten it to work successfully? Looking back through the thread, all the reports of success seem to be from those using a 512k rom board with eprom.

I'm having less luck getting this to run on my ÜberGROM board that came in the other day. I tried both the latest 'non-backwards' file in the zip from page 5, as well as the one from the 512KROM.zip attachment on page 2. Both were detected, the former displays 'For Games' as option 2, and the latter shows "Menu". Both boot into a cyan screen, same color as startup, and the computer promptly locks up. I don't have an Atmega in place for GROM emulation if it matters. Currently I am using the PLCC socket with both AT49F040 flash chips I received with the board. My programmer has had no issues on programming the chips. The programmer software verification passes every time, and I have manually verified that the code that is read back matches the original file, both prior and after inserting it into the ÜberGROM board for testing. Something interesting of note in my tests with commercial roms: first I programmed an image of Adventure, and did not fill in the excess after the 8k of code. The result was a cart with Adventure in the first 8k of space, followed by the former code from the current multicart image beyond the first bank. When booted, it showed the same header from the multicart image, '2. For Games' instead of Adventure. Afterwards I duplicated the Adventure rom across all banks, which didn't work either, but did display 'Adventure' correctly. I assume Adventure came on a grom instead of rom, as I then programmed Nature's Way in the same manner, which did boot correctly. Beyond this, I did try the inverted version of the file for Classic99 for the hell of it, which didn't work either, as expected. I take it that this is this a positive sign that my board is booting from the highest bank instead of the lowest? Is there another possibility? What if it lands in a bank inbetween, currently assumed to not happen? Any idea on a possible internal revision in TI-99 computers that might account for the problems, some difference in wiring/data paths to/from the program module port? Assuming the chips are being programmed correctly (between 2 chips and all the verifications, I don't think it's on the flash or programmer end), and considering that the image of a commercial game that came on a single rom with no grom works fine, what could be the problem? Did I miss something about this multicart image requiring the GROM emulation function provided by the Atmega, which my ÜberGROM board currently lacks? Could it be a flaky PLCC socket on the ÜberGROM itself?

Payment and PM sent back at you. It sounds like I picked a good time to unbury my TI-99 and decide to actually do something with it. I'll probably be performing one of the internal 32k memory upgrades as well. It's just too bad this is a US unit with the composite video out, I'd really love to hook up RGB out up to my PVM, even though the rf alone is some of the cleanest I've seen.

I have a 32-pin PLCC to DIP adapter for my burner, so programming one is no issue. I'd prefer flash over eprom anyways, saves time on erasing the chips. Simply using it as a rom cart for the time being is enough of a toy for me while I figure out how I want to handle acquiring the ATMega. $23 for an UberGROM + a pair of blank flash chips sounds good to me, even if it is a prototype. What's your paypal?

As tempting as the GROM board is, I don't think my getting on 8 years old, made in china programmer is going to be of much use with the ATMega. I don't suppose the GROM board can function as rom-only without the ATMega in place? Otherwise, I may have to take you up on the offer for the ROM-only board. I assume you take Paypal?

What a speedy reply! I took a quick skim over your 512k cart thread. There's certainly no lack of in depth info on the subject. I'll have to give it a more thorough reading when I'm better rested. I'll have to check if my eprom burner supports the ATMEL ATMega1284P, because if it does, that GROM board you're working on looks nifty. I don't suppose you've figured out pricing for these boards yet, sans ATMEL and flash chips?

So I more recently dusted off my TI 99/4a, made a cable for my TI Program Recorder and had some fun messing around with transferring over cassette recordings of TI Basic games. Of course, I'm extremely limited on what I can do without an Extended Basic cart. I was wondering, what all is inside of one and could it be easily replicated with off the shelf components, a proper donor cart, and an eprom? Would it be possible to simply swap out the TI Basic rom (assuming it's contained as such) with an eprom with the XB code on it? I've spent a good long while searching for information on this, and have come up woefully short on even a measly list of components inside the XB cart. I'm kind of surprised no one seems to have at least proposed the idea of hacking in XB functionality before. Any insight is greatly appreciated.

That's why I love the college I go to. Just about everyone here is a nerd. Most have played or still play the classics and definitely appreciate the oldies. If someone did the Mario, put on a Pac-Man skit like those you see on youtube, or even dressed up as some less widely known video game character like say Bonk, most would get the reference and some would even join in with you. Heck me and some friends have entertained doing a Paperboy skit around the apartments at my college. In general, most people I talk to on campus generally share the opinion that most games nowadays are the same crap you've played again and again, and have nothing on the classics. In fact some are even counting the days until the video-game market crashes from all of the same crap being published again and then is revived a few years later with fresh, original, or just plain fun games again. Well one can dream can't they?

Got my games in today and just wanted to say thanks! Panthroman is a top-notch, very professional seller. So buy his stuff!

Pm sent.