Search found 188 matches

by tzok
Mon Feb 24, 2020 3:55 pm
Forum: Hardware
Topic: GOTEC or HXC
Replies: 7
Views: 481

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: 36
Views: 1350

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: 36
Views: 1350

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 als...
by tzok
Mon Feb 10, 2020 10:09 pm
Forum: Hardware
Topic: Megafile 60 problems
Replies: 31
Views: 1277

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: 735

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: 2261

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: 2261

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: 31
Views: 1277

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: 15790

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: 31
Views: 1277

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: 31
Views: 1277

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: 6827

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: 2261

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...
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: 3064

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: 643

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: 1817

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: 815

Re: ST power switch

by tzok
Sat Dec 28, 2019 9:01 pm
Forum: Applications
Topic: Atari LOGO and TOS version issue
Replies: 2
Views: 599

Re: Atari LOGO and TOS version issue

Why don't you try yourself on STeEM?
by tzok
Sun Dec 15, 2019 12:32 pm
Forum: Hardware
Topic: New power supply for my Mega ST4
Replies: 11
Views: 3266

Re: New power supply for my Mega ST4

All ground terminals are bound together, if you use thick enough wires, then even 1 ground wire will be ok. Please check the 12V rail voltage on a running system... you may be surprised by its value.
by tzok
Sun Dec 15, 2019 12:30 pm
Forum: The Atari 8bit corner
Topic: Atari 800 power supply
Replies: 2
Views: 5159

Re: Atari 800 power supply

Actually all you need is a 5V / 2A PSU (most USB chargers for tablets will be ok), and a DIN-7 plug. If you really want, you can put it inside original Atari PSU case, taken from a broken unit.
by tzok
Sun Dec 15, 2019 11:03 am
Forum: Hardware
Topic: Replacement power supply
Replies: 13
Views: 1334

Re: Replacement power supply

UltraSatan should boot fast enough to be ready before ST tries to access it, especially if you have TOS 2.06. One problem with RD-50 is the fact it has only a feedback from 5V rail, and in the ST the 12V rail has almost no load (floppy motor on some units, and some video circuitry). So loading only ...
by tzok
Mon Dec 09, 2019 8:47 pm
Forum: The Atari 8bit corner
Topic: Differences between the 800 and 800 XL/XE
Replies: 3
Views: 1229

Re: Differences between the 800 and 800 XL/XE

Keyboard is not that much different, it has the same keys except HELP, and is build with similar mechanism. It has 4 joystick/paddle connectors, it may have CTIA instead of GTIA, it hast older revisions of ANTIC and SALLY, and has 48 kB of RAM (but can be expanded up to 96 kB). Also it has a detacha...
by tzok
Sun Dec 08, 2019 1:01 pm
Forum: Hardware
Topic: 4xTOS selection for STE?
Replies: 19
Views: 1534

Re: 4xTOS selection for STE?

I've seen the Adrian's video, but my consideration was only the initial state after powering on, not the consecutive switchings. All the required signals on STe you can find on the keyboard connector (including the floppy LED, and the /RESET signal). The drawback is - on ST there is no easy way for ...
by tzok
Sun Dec 08, 2019 11:27 am
Forum: Hardware
Topic: 4xTOS selection for STE?
Replies: 19
Views: 1534

Re: 4xTOS selection for STE?

Sorry, but I can't see your point. I'm using an ATtiny for selecting the TOS Slot in Flash (1040STFM) - works reliably. During selection /RESET is still high. If you use "pure" uC, then it has chance to work, but if you use something like Arduino, it's bootloader may wait longer than powe...
by tzok
Sun Dec 08, 2019 11:08 am
Forum: Hardware
Topic: 4xTOS selection for STE?
Replies: 19
Views: 1534

Re: 4xTOS selection for STE?

39SF040 Flash has the same pinout as the 29C040/29F040:
Image
Source: http://romlaboratory.dbwbp.com/romlab/cart2epr.htm

Up to 2 Mbit there is no difference in pinout between EPROM and Flash.

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