razor1000

Man, I don't remember paying that much for mine, and it was NIB!

Oopps, I meant 29F040s. And I forgot I have some OTP 27c040s, but I want to get some UV-erasable ones before I use those.

Well I got the Lynx Diag cart to work (finally!), still no luck with Robotron though. I am using a Lynx I, though. Sounds like Centipede and Robotron need to have the images hacked a little to get them to work linearly. I've only got three 27c020s, so it takes a while to test 256Kb ROMs. I'm still working on my 27F040 writer. My burner is old-school and won't do EEPROMs.

Doh! Of course I picked the broken one! I tried Robotron also, but I was messing with the buffer sizes on my eprom burner and I'm sure I screwed it up. I also just realized I took my Lynx model 1 apart to make it easier to install eproms in the zif socket, and I never checked to see if it still worked okay with a retail cart. You would never know I test for a living, would you?!? Anyways, I'll give Marlboro a shot. I used AMD eproms. 27c010s and 27c020s. Anybody know another app that will strip the Handy header? I still wonder if that may be the problem. It is a beta release, after all. CPUWIZ, I take it you used UCON64 to strip the .lnx header? If so, what version did you use?

That's a great resource! Thanks for the tip! Unfortunately my problems are on an even more basic level. I could look at the cart's contents, but I'm not even sure what I'd be looking for. I'm sure I'm burning the ROMs incorrectly. Here's what I do: 1. download the ROM (from Atariage, of course ) 2. use uCon64 to strip off the 64byte Handy header (lnx to lyx) 3. copy the ROM to a floppy and sneaker it to my eprom machine 4. load the file up and burn it as binary things I think may be going wrong: 1. uCon64 may be borking my ROM files. The file sizes seem correct, though, 131,072byes for 128Kb files. 2. are .lyx files HEX or BIN? I've been burning them binary 3. I just burn the rom linearly, from 00000h to 1FFFFh (I'm starting with 128Kb ROMs) HELP!

Wow. All of that is exactly what I was talking about. But I think I'll just go with switching the high address lines. I think that will make it simple enough. CPUWIZ: I've been trying to burn eproms for use with this prototype adapter, but I'm not having much luck. I don't have any 27c040s yet, just 010s and 020s. I've only tried one ROM so far, but it hasn't worked. What kind of eproms did you use with it? And what games did you try?

Ree-heee-heeeeallly? Who do I contact?

Anyone ever do the RSA header for S.I.M.I.S.? Can I burn it to an eprom? How big is it anyways? One megabit would be puuuurrrrr-fect (that was me imitating a cat, which is as close to a Lynx imitation as I can do)

Two or three years ago I went to Value Village (a local 2nd hand chain) and found a Lynx I that was a little beat up (scratches, etc). It was $3 I think. Took it home, put some batteries in it, and it powered up fine! It had California Games in it! Handhelds is an area my collection is lacking, but I've got a Lynx!

I think I figured it out. I believe the pinout I was looking at was from the Lynx side, instead of the cart side. So it noted that A11 was not connected, but it has 20 address lines, so I would guess they just shift them up one since the shift register is A12-A19, and there is no A19 on these eeproms! I took a look at a hex dump of Centipede, and although there were several zero'd out spots, there was nothing to verify my hypothesis. Thanks all! BTW, anyone have a list of all the 128kB carts? Also, as for the multi-cart idea, couldn't you set up a counter that would control the top few address lines and have the counter count pulses from one of the unused lines? (Audio-in? *Supposedly* it can be used for addressing) Then write a little menu proggie that pulses that address line.

I beg to differ. The pinouts are the same. All you need is a little converter. You can buy one from:http://www.batronix.com/electronic/e-shop.shtml Look for PLCC32-DIP32 Adapter WA032127 (for PLCC32 Eproms e.g. 27c010 till 27c080) It's $15 + shipping (from Germany, ick), or you can make one out of a 32-pin PLCC socket and a 32-pin DIP socket. I'm in the process of doing that right now. I found a place locally that sells AM29F040Bs for $3 a pop. You're off on your Megabit - Kilobyte ratio. 27c040 is a 4 Megabit, which is 512kB. It *should* hold two 256kB roms. It sounds like you've burned eproms for this before. Did you have to do anything other than strip the Handy header? (.LNX to .LYX) I'm going to go pop a rom image into my burner right now and dissassemble it to see what's going on with the A11 range. If it's just zero'd or F'd out I will presume I could skip over that pin and shift the other address lines down 3. (A9 and A10 aren't used in a 256kB ROM)

I just acquired a Lynx Prototype Eprom cart: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...item=1383405478and looking at the tech docs I think I'm going to have some trouble. I've been looking at 512kB PLCC EEproms on eBay, so I thought I could use those and just flip the uppermost address line and fit two 256kB ROMs in one eprom. Unfortunately address line 11 is not used on the retail carts. Why? What a dumb thing to do! Instead of doing the addressing linearly, (A0, A1, A2-A18) they use an eight bit shift register and a counter. (A12-A19 for shift register, A0-A10 for counter) The counter lines increment depending on how big the ROM is: 9 bits for 128kB, 10 for 256kB, 11 for 512kB. Does that mean they just F out every xx8xxh address? Maybe this is good for padding, but wouldn't that waste like 4kB? Couldn't I just shift the shift registers down an address on the eeprom(so the system thinks it's using A12, but it's using A11 on the eeprom) and that way free up the upper two address lines on the eeprom to toggle between roms? This is very, very confusing. I wish they would've just used linear addressing. Thanks!