Search found 144 matches

by tzok
Sun Jan 12, 2020 11:17 am
Forum: HARDWARE DISCUSSIONS
Topic: Anyone seen this drive?
Replies: 8
Views: 542

Re: Anyone seen this drive?

Yes, the DS0..3 switch is where @czietz showed.

I have two of these:
Image
But don't like them, as they read only 82 tracks.
by tzok
Sun Jan 12, 2020 11:06 am
Forum: HARDWARE DISCUSSIONS
Topic: Keyboard swap
Replies: 4
Views: 191

Re: Keyboard swap

Both ST and STf/e keyboard schematics for comparison: https://obrazki.elektroda.pl/9164169800_1578827160_thumb.jpg https://obrazki.elektroda.pl/9070325100_1578827159_thumb.jpg All ST keyboards were electrically the same (from the ST side), only the ST keyboard had re-routed JOY0/1 signals to the mot...
by tzok
Wed Jan 08, 2020 7:52 pm
Forum: HARDWARE DISCUSSIONS
Topic: Anyone seen this drive?
Replies: 8
Views: 542

Re: Anyone seen this drive?

The bottom metal bracket is not a part of the drive, possibly under it there are solder-jumpers.

This is a quite common late ST FDD SONY MP-F11W.

Image
by tzok
Mon Dec 30, 2019 4:56 pm
Forum: HARDWARE DISCUSSIONS
Topic: Flash boot blocks ?
Replies: 3
Views: 147

Re: Flash boot blocks ?

This affects only the programming algorithm. When reading they all behave like regular ROMs.
by tzok
Sun Dec 29, 2019 5:31 pm
Forum: HARDWARE ISSUES
Topic: UltraSatan by retrofun.info ?? ver 4 2018
Replies: 4
Views: 327

Re: UltraSatan by retrofun.info ?? ver 4 2018

I can't see your pics, and don't quite get what your problem is. My US (from different vendor), used to clear the card in slot #0 when I was powering off the Atari. The partial solution was to configure cards to be ACSI ID 1 and 2 instead of 0 and 1, but final solution was replacing an ACSI buffer c...
by tzok
Thu Dec 26, 2019 11:06 am
Forum: ROM UPGRADES
Topic: Winbond eeprom
Replies: 3
Views: 134

Re: Winbond eeprom

In most cases you can also use much cheaper Flash memories like 29C010.
by tzok
Sun Dec 22, 2019 7:29 pm
Forum: HARDWARE ISSUES
Topic: Atari 1040 STE screen troubleshooting
Replies: 13
Views: 1102

Re: Atari 1040 STE screen troubleshooting

So check 12V line (blue) from PSU...
by tzok
Wed Nov 27, 2019 11:19 pm
Forum: HARDWARE DISCUSSIONS
Topic: Gotek write on floppy
Replies: 6
Views: 298

Re: Gotek write on floppy

You could force write protect, but by default, write is enabled. Only be aware that formatting to a higher capacity (more tracks/sectors) than original image size will corrupt the image file.
by tzok
Wed Nov 20, 2019 12:14 pm
Forum: RTC (Real time clock)
Topic: RTC guide?
Replies: 24
Views: 1161

Re: RTC guide?

I don't know what PPera has done, but I think he made an offset of 20 years between IKBD clock and GEMDOS clock. So XBIOS subtracts 20 years when setting the IKBD clock, and adds 20 years, when reading it.
by tzok
Mon Nov 18, 2019 9:03 pm
Forum: RTC (Real time clock)
Topic: RTC guide?
Replies: 24
Views: 1161

Re: RTC guide?

It is not up to TOS to fix this. This is a flaw in the original IKBD firmware (actually it is projected behavior). TOS uses GEMDOS clock, but every TOS since 1.02 polls the IKBD RTC (via XBIOS's Getttime()) every time GEMDOS's Tgetdate() or Tgettime() is called. And same with Tsetdate()/Tsettime() (...

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