Search found 129 matches

by frank.lukas
Fri Jan 17, 2020 9:25 pm
Forum: ST
Topic: C070243 REV.C - Atari 260ST (1Mb) - Strange
Replies: 6
Views: 147

Re: C070243 REV.C - Atari 260ST (1Mb) - Strange

every dealer had such seals
by frank.lukas
Sat Jan 11, 2020 9:11 pm
Forum: HARDWARE ISSUES
Topic: Mega ST keyboard cable replacement
Replies: 5
Views: 141

Re: Mega ST keyboard cable replacement

Look for a RJ12 cable 1:1 with 6 wires ...
by frank.lukas
Tue Jan 07, 2020 9:25 pm
Forum: ELECTRONICS
Topic: Board cleaning
Replies: 12
Views: 525

Re: Board cleaning

I use for clean acetone with a hard short bush ...
by frank.lukas
Mon Dec 30, 2019 8:42 pm
Forum: HARDWARE DISCUSSIONS
Topic: CPU relocator for a Atari?
Replies: 10
Views: 302

Re: CPU relocator for a Atari?

There is the MMU in the way ...
by frank.lukas
Fri Dec 27, 2019 6:45 pm
Forum: MONGREL H4 USER BUILDS
Topic: DB19 variations
Replies: 4
Views: 152

Re: DB19 variations

I think there are EU and US types of the DB19 ...
by frank.lukas
Sat Dec 14, 2019 6:04 pm
Forum: MEMBER BLOGS
Topic: A PAK sandwich. I really didn't think this would work!
Replies: 4
Views: 316

Re: A PAK sandwich. I really didn't think this would work!

You need TOS 1.04 on the MST Mainboard for the PAK and TOS 2.06 at the PAK. No need of TOS onto the IDE Interface.
by frank.lukas
Wed Dec 11, 2019 6:14 pm
Forum: HARDWARE ESSENTIALS
Topic: IDE Interface for Atari Mega STE ...
Replies: 1
Views: 208

IDE Interface for Atari Mega STE ...

The installation is a bit of work. The IDE Interface put place on the TOS eprom sockets. You have to desolder and solder it on the back side in, RP22 for the Address A17 to A23 and RP27 for /AS, /LDS and /RW. DTACK are connected to R223 and Reset is connected to U450 (LS244-11) and INT connected to ...
by frank.lukas
Tue Dec 10, 2019 7:21 am
Forum: HARDWARE DISCUSSIONS
Topic: Atari mega ste help
Replies: 31
Views: 2498

Re: Atari mega ste help

On Pin11 there are simply a low (0V) if a RGB Monitor is connected and high (5V) when a SM124 is connected ...

May be a Battery was leaked ?
by frank.lukas
Mon Dec 09, 2019 9:11 pm
Forum: HARDWARE DISCUSSIONS
Topic: Atari mega ste help
Replies: 31
Views: 2498

Re: Atari mega ste help

U309 Pin11 must be high when a SM124 is connected and low if a RGB Monitor is connected. The 74F257 can be faulty if not ...

When you change the Monitor from Mono to RGB the Computer must be make a Reset. See the Schematics
by frank.lukas
Fri Dec 06, 2019 5:37 pm
Forum: TF520 (OBSOLETE)
Topic: Selling 2x ready built TF520 Cards
Replies: 22
Views: 2573

Re: Selling 2x ready built TF520 Cards

8 Bit Dreams wrote:
Fri Dec 06, 2019 1:36 pm
Had no time to check exact fw build - have a separate computer for these purposes, all firmwares are stored there,
will upload fw i used here..
thanks

I will wait ...

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