Search found 723 matches
- Thu Nov 25, 2021 9:17 am
- Forum: HARDWARE DISCUSSIONS
- Topic: Mega 4 two chip TOS with no 74LS11
- Replies: 18
- Views: 4756
Re: Mega 4 two chip TOS with no 74LS11
exxos' hunch is likely correct - an "advanced" TOS 2.06 decoder. Pasting in my FB comment: Def. a TOS switch of sorts. "New TOS" or "Old 2 chip" / "Old 6 chip". It's picking up ROM2 from the G19 connection to GLUE. However, there's more involved that I'm not s...
- Sun Nov 21, 2021 6:43 pm
- Forum: ATARI FOR SALE & WANTED
- Topic: Suggested value and interest STbook
- Replies: 14
- Views: 4543
Re: Suggested value and interest STbook
A German ST Book just went for 1153 EUR on eBay (yeah I was outbid). It was sold as for parts/non working but from the description seemed just to be the seller not having any way of powering it. Otherwise it looked to be in great condition.
(Congrats to whomever sniped me )
(Congrats to whomever sniped me )
- Tue Nov 16, 2021 8:03 am
- Forum: ATARI FOR SALE & WANTED
- Topic: Suggested value and interest STbook
- Replies: 14
- Views: 4543
Re: Suggested value and interest STbook
Ofc pictures - and there will be interest regardless of condition. "Just" the price that will be affected
(I'm interested)
(I'm interested)
- Fri Nov 05, 2021 9:05 am
- Forum: HARDWARE ISSUES
- Topic: STE video chip
- Replies: 149
- Views: 34751
Re: STE video chip
And as I thought, it has strange video issues! It does not happen with the C300588 . Interesting. The jump/blue-yellow issue is due to mismatch in timings between MMU and Shifter. The one-pixel distortions in the second part looks very much like what I had with the doubleST (overclocking the Shifte...
- Fri Oct 22, 2021 3:57 pm
- Forum: RAM UPGRADES
- Topic: 4mb upgrade possible on this 1040 STFM?
- Replies: 14
- Views: 5131
Re: 4mb upgrade possible on this 1040 STFM?
Thank you. I think that I can do that. I need this! Desoldering the old RAM chips is a _lot_ of work. I would be hesitant to do it with just a solder sucker, esp. if you haven't done it a lot already. My first choice is a proper desoldering gun, and the second (much more risky) is a hot air station...
- Thu Oct 14, 2021 9:48 am
- Forum: HARDWARE ISSUES
- Topic: Problem with FPU 68882
- Replies: 24
- Views: 7708
Re: Problem with FPU 68882
https://mikrosk.github.io/doitarchive/doit_st/1905.htm13 Bombs
Coprocessor Protocol Violation. A read of the FPU has rersulted in a illegal value
I interpret this not as wrong _value_ (calculation) but garbled data that doesn't follow the protocol between CPU and FPU.
/Troed
- Thu Oct 14, 2021 9:44 am
- Forum: HARDWARE ISSUES
- Topic: Problem with FPU 68882
- Replies: 24
- Views: 7708
Re: Problem with FPU 68882
It would be my guess that a 68881 has a differient pal that the 68882. Just a guess.. When I put a 68882 in my MSTE from Exxos it needed a pal. Don't know about a falcon.. The MSTE needs one for FPU or no FPU - but that's very different from the Falcon going from one FPU to another. Also they're ad...
- Thu Oct 14, 2021 9:39 am
- Forum: FLOPPY DRIVES KITS & UPGRADES
- Topic: Small batch of AJAX chips in EU
- Replies: 8
- Views: 3873
Re: Small batch of AJAX chips in EU
They've finally arrived after having taken interesting postal routes. They did so the day before I went on a two week vacation to southern Europe though so I won't be able to test or send any until two weeks from now though. Sorry. I have one more available besides the already claimed. regards, Troed
- Thu Sep 30, 2021 12:36 pm
- Forum: ATARI FOR SALE & WANTED
- Topic: WANTED MegaST 68881 copro board C103067 / SPF004
- Replies: 25
- Views: 9516
Re: WANTED MegaST 68881 copro board C103067 / SPF004
Arne write a FPU Emulator so you can use DML FPU Test Soft with Mega STE or Atari SFP004 ... https://atari-forum.com/viewtopic.php?f=14&t=40516&p=422081&hilit=fpu+emulator#p422081 Write or found - but in anycase - that's awesome! I will look at that when I'm working on my MSTE next time...
- Wed Sep 29, 2021 4:07 pm
- Forum: ATARI FOR SALE & WANTED
- Topic: WANTED MegaST 68881 copro board C103067 / SPF004
- Replies: 25
- Views: 9516
Re: WANTED MegaST 68881 copro board C103067 / SPF004
How do you know its not working ? You also need custom libs and code as the FPU io mapped isn't normally compatible with linef 030 instructions. Its why GB6 doesn't support io mapped as nobody ever uses io mapped. I know I found a benchmark program that could do I/O mapped FPU when I added one to m...