Search found 246 matches

by tzok
Sat Apr 18, 2020 3:45 pm
Forum: News & Announcements
Topic: New Atari Mega style case for STF / STFM / STE and Falcon, Maybe
Replies: 51
Views: 6487

Re: New Atari Mega style case for STF / STFM / STE and Falcon, Maybe

I really like the idea of keeping the original bottom part of the case. I'd insist on placing the keyboard connector on the add-on part, without need of modifying the original bottom part of the case. A good place for it would be right side, in the area where FDD originally was located. As for the f...
by tzok
Tue Apr 14, 2020 5:50 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

So it doesn't see low level sectors on track 0. You have to (low level) format it prior to partitioning. Of course then you will lose any data that was left on it.
by tzok
Sun Mar 29, 2020 9:44 am
Forum: The Atari 8bit corner
Topic: Atari 800xl - bargain or steer clear?!
Replies: 4
Views: 2676

Re: Atari 800xl - bargain or steer clear?!

Not enough information to give any answer. It can be something trivial, as well as something beyond economical repair. Of course everything can be repaired/rebuild. Some chips may be hard to find, especially now, when borders are closed (and will likely stay closed for next year). Some of these chip...
by tzok
Mon Mar 09, 2020 7:30 am
Forum: Hardware
Topic: RTC megaST4
Replies: 6
Views: 1124

Re: RTC megaST4

Pin 2 is grounded anyways, battery + to the anode of D4.
by tzok
Sun Mar 08, 2020 10:36 am
Forum: For sale / Wanted
Topic: FS: ATARI Prototype Sparrow Rev. A
Replies: 25
Views: 4007

Re: FS: ATARI Prototype Sparrow Rev. A

mikro wrote:It looks like this one described on old-computers.com:
sparrow-board.jpg
Assuming it works, I guess you need a Mega STE and TOS 2.07 at least.
If you look closely it is exactly the same board... only with TCXO populated. Look at the GAL stickers.
https://www.maedicke.de/atari/hardware/sparrow.htm
by tzok
Fri Mar 06, 2020 3:30 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

I always used their services: http://mydata.pl/ but they don't have site in English. You may also try to contact this lab: https://sgdata.eu/ (also in Poland). Both I know, and trust them... and not all recovery labs you can trust. I know cases where recovery lab irreversibly damaged the media after...
by tzok
Fri Mar 06, 2020 12:01 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

Any internal FDD for the PC should be compatible with ST, and for USB drives Sony drives are, for sure MPF82E is. For USB drives only standard MS-DOS format is supported (but DS-DD 720 kB is supported). For the Atari it is required to have TOS 1.04 or newer to support MS-DOS formatted disks... but I...
by tzok
Mon Feb 24, 2020 3:55 pm
Forum: Hardware
Topic: GOTEC or HXC
Replies: 7
Views: 1885

Re: GOTEC or HXC

HxC is FPGA (Altera MAX), Gotek is ARM Cortex M3... There is an HxC firmware for Gotek, and there is an internal mounting version of FPGA-based HxC.
by tzok
Fri Feb 21, 2020 8:13 pm
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 45
Views: 5993

Re: Atari STE only boot in High Res

If this 1,3 V has been measured using multi-meter, then it is not meaningful at all...
by tzok
Wed Feb 19, 2020 7:21 am
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 45
Views: 5993

Re: Atari STE only boot in High Res

1,3V on any output of TTL chip indicates a bad chip... as /OE is hard tied to GND on this chip all outputs should be "solid" 0 V or 5 V (well, it may be little different, but within TTL accepted range). So it looks like U405 is faulty. Of course 1 Ω resistance between any input and GND also confirms...
by tzok
Mon Feb 10, 2020 10:09 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

Have you tried to load an ICD Pro driver from a floppy disk? Have you tried Putnik's HDD driver? Maybe only autoboot area was damaged. Atari needs a HDD driver to recognize an ACSI hard drive. You can find ICD Pro disk image here: http://joo.kie.sk/?page_id=306 ...or here: https://sites.google.com/s...
by tzok
Wed Feb 05, 2020 10:23 pm
Forum: Hardware
Topic: request hdd led for mega ste
Replies: 10
Views: 2011

Re: request hdd led for mega ste

Isn't it just a regular LED? I guess, the "lens" is separate, like in SH205/Megafile.
by tzok
Fri Jan 31, 2020 10:41 am
Forum: Hardware
Topic: Compo software dual tos 1.62 / 2.06 rom images - where to find?
Replies: 30
Views: 4361

Re: Compo software dual tos 1.62 / 2.06 rom images - where to find?

Yes, but I don't remember which is which. If it won't boot, just swap the chips... but the silkscreen on the STe board says HI/LO and I guess I have named the files according to that. Hi/Lo are more Intel, while O/E is more Motorola naming convention. But what is hi-byte for Intel is a lo-byte for M...
by tzok
Thu Jan 30, 2020 11:35 pm
Forum: Hardware
Topic: Compo software dual tos 1.62 / 2.06 rom images - where to find?
Replies: 30
Views: 4361

Re: Compo software dual tos 1.62 / 2.06 rom images - where to find?

...but why are you doing this? Just combine both even and bots odd files from the command line, like it was written. Or you may use my program (CartMan) to do that. Where is the problem?

Ehhh... here you have it:
by tzok
Wed Jan 29, 2020 4:17 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

UltraSatan is much faster than both SatanDisk and Megafile. SatanDisk, in the opposite, is very slow, especially on writes. Sorry, but you are talking nonsense. Those parameters, such as sector interleave or head skew, are relevant when you perform a physical format of the disk, and are important on...
by tzok
Wed Jan 29, 2020 3:01 pm
Forum: Website Discussions
Topic: using external floppy disc drive to tranfer
Replies: 17
Views: 20632

Re: using external floppy disc drive to tranfer

You have to use DD (720 kB) disks, and format them on Atari. HD (1440 kB) disks work very unreliably with DD drives. Much more convenient way is to use UltraSatan, CosmosEx (SD card) or NetUSBee (USB or Ethernet), or at least GOTEK HxC.
by tzok
Wed Jan 29, 2020 2:28 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

There was no standard way of keeping drive configuration, some controller keep the configuration in NVRAM, some keep it on the drive itself. It was common for that controllers to use sector interleave and head/platter sector skew, without this data, even if you could make a binary copy of sectors, i...
by tzok
Wed Jan 29, 2020 6:43 am
Forum: Hardware
Topic: Megafile 60 problems
Replies: 57
Views: 7763

Re: Megafile 60 problems

It is not so easy operation with these drives. Remember that these drives had only mechanical parts and analogue front end on them, while the actual drive controller is on the card (in PC) or on the controller board in the HDD case. Details of the formatting depends on the controller BIOS, so it is ...
by tzok
Fri Jan 24, 2020 4:58 pm
Forum: Coding
Topic: "small footprint" C++ programs for STs?
Replies: 20
Views: 12399

Re: "small footprint" C++ programs for STs?

For embedded systems based on SMT32 there is the newlib-nano library...
by tzok
Wed Jan 22, 2020 10:57 pm
Forum: Hardware
Topic: Compo software dual tos 1.62 / 2.06 rom images - where to find?
Replies: 30
Views: 4361

Re: Compo software dual tos 1.62 / 2.06 rom images - where to find?

There is no special version, you just split it into even and odd bytes, and concatenate "even" images of both TOS versions, and "odd" images of both versions. You have to make a physical switch to alter highest address bit of EPROM in order to select lower or upper part of it (to choose TOS version ...
by tzok
Sat Jan 18, 2020 3:23 pm
Forum: Games - Compatibility Issues etc.
Topic: Found a game that does not run on Emulator
Replies: 4
Views: 4165

Re: Found a game that does not run on Emulator

It runs fine on STeEM SSE 4.0.0 but only on STF or STFM and TOS 1.02 - either UK or US. Don't know why you press 1, because it starts on right mouse button (or joystick fire).
by tzok
Sat Jan 11, 2020 12:50 pm
Forum: Hardware
Topic: Megafile 30 dead?
Replies: 2
Views: 1055

Re: Megafile 30 dead?

Drive should unpark automatically when is accessed.

Try with ICD tools.
by tzok
Thu Jan 02, 2020 10:51 am
Forum: Hatari
Topic: Syncing ST/STE clock with host
Replies: 10
Views: 3009

Re: Syncing ST/STE clock with host

As these machines don't have native RTC, I would like to use an AUTO folder programme, for example, as I used to do back in 1990 to read the RTC of the attached hard disk host adapter. That's not true, these machines do have RTC, it is only not battery backed up. Using the inbuilt RTC is also a lit...
by tzok
Tue Dec 31, 2019 3:53 pm
Forum: Hardware
Topic: ST power switch
Replies: 3
Views: 1299

Re: ST power switch

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