Search found 270 matches

by czietz
Sat Aug 01, 2020 5:03 pm
Forum: HARDWARE ISSUES
Topic: CHINON FX-354
Replies: 12
Views: 147

Re: CHINON FX-354

In the MegaSTE, check jumpers W401 and W402 for the correct settings:
https://docs.dev-docs.org/htm/search.ph ... +Schematic
by czietz
Sat Aug 01, 2020 1:09 pm
Forum: HARDWARE DISCUSSIONS
Topic: My summer project: A colour Stacy
Replies: 80
Views: 1843

Re: My summer project: A colour Stacy

Atarian Computing wrote:
Sat Aug 01, 2020 11:32 am
Here's the article @czietz mentioned:
Well, I didn't want to post it due to copyright reasons. Thank you.

@derkom: If you look at pins 2A,B,Y and 3A,B,Y of the schematic, you can see what I meant: BR of the disabled CPU is grounded.
by czietz
Sat Aug 01, 2020 12:41 pm
Forum: MONGREL H4 USER BUILDS
Topic: Troed's H4 build
Replies: 54
Views: 2557

Re: Troed's H4 build

Check the signal on the scope. E.g., if for some reason you have very slow edges, and depending on the threshold voltage setting of your LA, you would see an uneven duty cycle.
by czietz
Sat Aug 01, 2020 9:56 am
Forum: HARDWARE DISCUSSIONS
Topic: My summer project: A colour Stacy
Replies: 80
Views: 1843

Re: My summer project: A colour Stacy

Two remarks: 1. I have confirmed with someone who actually owns the respective hardware that the circuit described in c't magazine... Hilfskraft 68000-Prozessor trotz PAK68/2 Roland Beck Praxistip, PAK-Erweiterung, Prozessor-Umschaltung für 68000 und 68020 parallel, für Atari ST und Amiga, TOS c't 7...
by czietz
Tue Jul 28, 2020 1:27 pm
Forum: H5 Phoenix Platform Edition
Topic: RAM JUMPERS ADDED
Replies: 2
Views: 63

Re: RAM JUMPERS ADDED

Remark: If you disconnect MAD8 (as well as MAD9, of course), you end up with 256k (not 512k) of RAM. A nice way of emulating an original 260ST prototype :D.
by czietz
Sat Jul 25, 2020 8:36 pm
Forum: HARDWARE ISSUES
Topic: New Falcon a lemon?
Replies: 66
Views: 1140

Re: New Falcon a lemon?

An original ST keycap is just the opposite: dark plastic on the inside, light plastic on the outside. IMG_4387.JPG I guess a Falcon keycap is just the other way around with light plastic on the inside? I don't think it's painted and you're therefore wrongly "accusing" the seller. Maybe a Falcon owne...
by czietz
Mon Jul 20, 2020 6:33 am
Forum: HARDWARE DISCUSSIONS
Topic: Smonson's untitled simple harddisk project
Replies: 32
Views: 920

Re: Smonson's untitled simple harddisk project

Smonson wrote:
Sun Jul 19, 2020 11:45 pm
I did check the menu at the desktop to see if I could manually add the letters at one point, but the option was greyed out [...] I'm on TOS 1.04.
Note that on TOS 1.0x you have to first select an existing drive icon (e.g. floppy drive) by clicking on it before the menu option becomes active.
by czietz
Sun Jul 19, 2020 6:42 pm
Forum: HARDWARE DISCUSSIONS
Topic: Smonson's untitled simple harddisk project
Replies: 32
Views: 920

Re: Smonson's untitled simple harddisk project

I checked the first 8 sectors and they have stuff in them that looks like a TOS partition table in a hex editor - compared with the information I've been able to find online. At first glance I'd agree that this looks like a proper root sector. So, just to avoid any misunderstanding: If you reboot w...
by czietz
Sun Jul 19, 2020 9:04 am
Forum: HARDWARE DISCUSSIONS
Topic: Smonson's untitled simple harddisk project
Replies: 32
Views: 920

Re: Smonson's untitled simple harddisk project

Iirc, AHDI does a compulsory bad blocks check after formatting. I.e. basic writing and reading must already work with you HW. Otherwise, AHDI would have marked all sectors as bad. You could check the SD card's contents on another machine: is there a root sector? Does it look correct?
by czietz
Sun Jul 19, 2020 7:46 am
Forum: HARDWARE DISCUSSIONS
Topic: Smonson's untitled simple harddisk project
Replies: 32
Views: 920

Re: Smonson's untitled simple harddisk project

Drive letters are assigned to the partitions automatically at the next reboot when AHDI is loaded.

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