Search found 721 matches

by troed
Mon Jan 03, 2022 10:36 am
Forum: HARDWARE DISCUSSIONS
Topic: False alarm! Was: 68HC000 not perfectly 68000 compatible
Replies: 33
Views: 7093

Re: 68HC000 not perfectly 68000 compatible (!)

Hey always meant to ask you, (on a hopefully relevant close topic); does Closure work properly on the Mega ST? I believe my Mega 4 runs ok, but it doesnt like the demo (various screen corruption issues). It does - but there are machines where the new kind of fullscreen lines I use show severe Shift...
by troed
Sun Jan 02, 2022 8:07 pm
Forum: HARDWARE DISCUSSIONS
Topic: False alarm! Was: 68HC000 not perfectly 68000 compatible
Replies: 33
Views: 7093

False alarm! Was: 68HC000 not perfectly 68000 compatible

edit: This turned out to be a hardware problem on the datalines on this particular STE. Once corrected the HC worked perfectly in Closure again. We're back to there sometimes being reports of incompatibilities but on investigation it turns out to not be the CPU. Post as it was follows: *** I've just...
by troed
Tue Dec 21, 2021 1:35 pm
Forum: SOFTWARE
Topic: TOS 1.4 disassembly project
Replies: 20
Views: 7132

Re: TOS 1.4 disassembly project

Sources are complete now. Have to do a bit of cleanup, and add some readme, but other than that i consider it finished. This is amazing - thank you! Don't worry about the interest - it's high - but the old Atari scene isn't synchronous ;) I predict this will be very very worthwhile for the ST remak...
by troed
Thu Dec 02, 2021 10:32 am
Forum: FLOPPY DRIVES KITS & UPGRADES
Topic: Small batch of AJAX chips in EU
Replies: 8
Views: 3687

Re: Small batch of AJAX chips in EU

Yeah send address in PM and we'll sort everything else out from there :) I had hoped I would be able to fit one into my own MSTE as soon as I got them but I'm not getting the time it seems. I'm sure they're all ok though, else I will swap them.

/Troed
by troed
Wed Dec 01, 2021 9:22 am
Forum: FLOPPY DRIVES KITS & UPGRADES
Topic: 1.44MB HD7 media change wiring w/Epson 340
Replies: 10
Views: 3246

Re: 1.44MB HD7 media change wiring w/Epson 340

Just so that we're clear on the workings. HD mods work "backwards" from how Atari implemented it*, sort of. We use the fact that the drive signals whether it has an HD or DD disk inserted, and route that signal to the HD mod PCB. The floppy cable isn't involved - you just wire the pin you ...
by troed
Fri Nov 26, 2021 5:50 pm
Forum: ATARI FOR SALE & WANTED
Topic: Suggested value and interest STbook
Replies: 14
Views: 4357

Re: Suggested value and interest STbook

Robson wrote: Fri Nov 26, 2021 5:37 pm 4 layers. Definitely not 2.
Thanks. That increases the risk that it's not salvageable at all unfortunately. In theory since schematics exists "anything's possible" but ...
by troed
Thu Nov 25, 2021 11:14 pm
Forum: ATARI FOR SALE & WANTED
Topic: Suggested value and interest STbook
Replies: 14
Views: 4357

Re: Suggested value and interest STbook

Thanks.

Question for those who know: Is the STbook PCB 2 or 4 layer?

There are indeed some repairs needed. If 2-layer, I'm still interested though, with the intention to get it back up running.

/Troed
by troed
Thu Nov 25, 2021 3:26 pm
Forum: HARDWARE DISCUSSIONS
Topic: Mega 4 two chip TOS with no 74LS11
Replies: 18
Views: 4617

Re: Mega 4 two chip TOS with no 74LS11

Thank you Troed, although I am not aware of what that does. I'm quite confident it's a TOS 2.06 mod (it can DTACK) - although it has a lot of unnecessary connections for one. I still wonder if it does something else too - but for your purposes it's not important. On this forum we both help as well ...
by troed
Thu Nov 25, 2021 9:17 am
Forum: HARDWARE DISCUSSIONS
Topic: Mega 4 two chip TOS with no 74LS11
Replies: 18
Views: 4617

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...
by troed
Sun Nov 21, 2021 6:43 pm
Forum: ATARI FOR SALE & WANTED
Topic: Suggested value and interest STbook
Replies: 14
Views: 4357

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 ;))

Go to advanced search