Search found 23 matches

by tfhh
Sat Dec 19, 2020 3:47 pm
Forum: 8 BIT CORNER
Topic: A little bit of 8 Bit: 65XE upgrade to 128k RAM
Replies: 65
Views: 12014

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

On 130XE too ? :?: Yes. Currently only 64 KB base memory is checked. For testing extended memory several utilities are availible. Ok, I own any TMS4164-15NL, are they compatible with the first bank (42164-15) ? They work fine! Otherwise, I check Battlezone (5200) with 64k only (and MMU), there are ...
by tfhh
Sat Dec 19, 2020 10:06 am
Forum: 8 BIT CORNER
Topic: A little bit of 8 Bit: 65XE upgrade to 128k RAM
Replies: 65
Views: 12014

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

The game is Crownland : http://a8.fandal.cz/games.php?name=C&butt_details_x=&from=250 I check 64k and 128 bank with Sys-Check cartridge, it's ok ! Sys-Check currently checks only the 64 KB base memory. I didn´t find the time to make new firmwares yet, but it´s on my personal roadmap ;) I would bet ...
by tfhh
Mon Nov 16, 2020 8:31 am
Forum: 8 BIT CORNER
Topic: A little bit of 8 Bit: 65XE upgrade to 128k RAM
Replies: 65
Views: 12014

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Hello everybody! i found this great thread about 65XE ram upgrade, but just discovered mine has a 130XE(64x4) motherboard with unpopulated U11, U12 and U35: since aren't more available on ebay the C25953, is there a way to program a GAL for replacing it? It´s not so easy to expand this XE mainboard...
by tfhh
Fri Jun 26, 2020 9:20 am
Forum: 8 BIT CORNER
Topic: A little bit of 8 Bit: 65XE upgrade to 128k RAM
Replies: 65
Views: 12014

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Hi, Sorry to resurrect an old post but I'm curious on which 65XE motherboard this expansion works? I'm particularly puzzled by the connection between GAL pin 7 (PB6) and PIA pin 16 (PB6) as on my mother board that PIA pin isn't connected to anything. So what is that connection supposed to do? I just...
by tfhh
Fri Jun 26, 2020 9:11 am
Forum: 8 BIT CORNER
Topic: A little bit of 8 Bit: 65XE upgrade to 128k RAM
Replies: 65
Views: 12014

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Hi, sorry beeing late to the party. I read you already fixed the problem ;) As another update - well it wasn't the +5v that was causing the problem. It was the Mitsumi 56-3217 keyboard mylar that apparently decided it had enough of being pulled in and out of the slot. The joys of working with >30 ye...
by tfhh
Tue Apr 28, 2020 8:46 am
Forum: ATARI FOR SALE & WANTED
Topic: Wanted: DELA Epromdisk firmware and software
Replies: 2
Views: 996

Re: Wanted: DELA Epromdisk firmware and software

Hi,

yes, I know - thanks. I got the files yesterday. For archive, here it is.

BR Jurgen
by tfhh
Sun Apr 26, 2020 10:40 am
Forum: ATARI FOR SALE & WANTED
Topic: Wanted: DELA Epromdisk firmware and software
Replies: 2
Views: 996

Wanted: DELA Epromdisk firmware and software

Hi! I got this expansion, a "DELA Romdisk" for the Atari ST - unfortunately without Eproms. Some investigations shows me, that the both Eproms on the top (2x 27256) contains the controlling software and "driver" for drive "c" (little C), and the other 8 sockets can be filled with Eproms containing t...
by tfhh
Wed Sep 06, 2017 8:28 am
Forum: ATARI FOR SALE & WANTED
Topic: WANTED COSMOSEX
Replies: 19
Views: 8755

Re: WANTED COSMOSEX

Hi Jookie, currently I'm not making devices as I'm somehow burned out from everything I did in the last few years... I'm considering to leave the making of devices to someone else, and the schematics and pcbs will be public soon. More info later. Real life, family and health ALWAYS first! Please tak...
by tfhh
Wed Sep 06, 2017 8:21 am
Forum: ALPHA DEVELOPMENT INFO
Topic: CURRENT SCHEMATIC
Replies: 7
Views: 3397

Re: CURRENT SCHEMATIC

Hi,
exxos wrote:
Tue Sep 05, 2017 4:39 pm
This is the current schematic for the new STF design.
This still needs checking against the STFM schematic for mistakes.
Looks very cool. And I see, you´re also a friend of Eagle :)

Jurgen
by tfhh
Tue Sep 05, 2017 5:51 am
Forum: MEMBER BLOGS
Topic: LIQUID RETROBRIGHT TEST ON MOUSE
Replies: 7
Views: 3932

Re: LIQUID RETROBRIGHT TEST ON MOUSE

Hi, Top part of the mouse socked in liquid peroxide. Left in sun light all day. I have this Retrobright stuff since years on my "to do" list, but never tried until now. Question: Do you leave the mouse all the time IN the fluid? And did you try it also with bigger parts? I saw ready-to-use "cream" f...

Go to advanced search