Search found 251 matches

by tzok
Fri Feb 19, 2021 8:39 am
Forum: Applications
Topic: How do I stop the AUTO folder running
Replies: 12
Views: 1696

Re: How do I stop the AUTO folder running

Try waiting ~1 sec. from turning power on to pressing Control.
by tzok
Thu Feb 18, 2021 9:16 pm
Forum: Hardware
Topic: ACSI2STM strange behaviour
Replies: 46
Views: 2401

Re: ACSI2STM strange behaviour

These are my settings:
acsi-1.png
by tzok
Thu Feb 18, 2021 8:48 am
Forum: Hardware
Topic: ACSI2STM strange behaviour
Replies: 46
Views: 2401

Re: ACSI2STM strange behaviour

Those are CS pins for additional SD Cards? I didn't short them to the ground. Instead, I removed them from sdCs array in firmware. All pins in sdCs are configured as INPUT_PULLUP in method SD::present(). I was using the original code. I found the code for configuring them as INPUT_PULLUP, but for u...
by tzok
Wed Feb 17, 2021 7:35 pm
Forum: Hardware
Topic: ACSI2STM strange behaviour
Replies: 46
Views: 2401

Re: ACSI2STM strange behaviour

Don't know why but PA1..4 and PB0..1 seem to be configured as output and set high, so shorting them to GND results in excessive current draw (50mA per pin), and overheating of the MCU.
by tzok
Sun Feb 14, 2021 11:26 am
Forum: Hardware
Topic: Fuse blown on PSU - replaced fuse. Didn't work replaced another PSU....Dead 1040 ST
Replies: 11
Views: 362

Re: Fuse blown on PSU - replaced fuse. Didn't work replaced another PSU....Dead 1040 ST

First of all fuses doesn't blow without a reason. Contrary to the popular opinion fuses are not meant to protect electronics. These act when electronics fail, and their purpose is to prevent a fire. Fuses are too slow to protect electronics. If a fuse is blown it is a bad idea to just replace it ant...
by tzok
Tue Jan 26, 2021 2:57 pm
Forum: Hardware
Topic: New Atari ST/E Mega ST/STE hard disk interface
Replies: 15
Views: 1269

Re: New Atari ST/E Mega ST/STE hard disk interface

SatanDisk requires a custom PCB, this project can be easily built on a piece of veroboard, or even without PCB, using just a few Dupont wires.
by tzok
Tue Jan 26, 2021 11:42 am
Forum: Hardware
Topic: New Atari ST/E Mega ST/STE hard disk interface
Replies: 15
Views: 1269

Re: New Atari ST/E Mega ST/STE hard disk interface

I believe the idea behind it is a DIY. Official production would be unprofitable. It is a "Blue Pill" board connected to the SD-Card module. Just 8 wires and you're done. I tried to compile this project, and found to be using the unofficial STM32 toolchain by Roger Clark, instead of the one by STM (...
by tzok
Sun Jan 24, 2021 12:16 pm
Forum: Hardware
Topic: New Atari ST/E Mega ST/STE hard disk interface
Replies: 15
Views: 1269

Re: New Atari ST/E Mega ST/STE hard disk interface

As far as I know it doesn't support autoboot (requires a driver on a floppy disk), and is relatively slow (concurrent solutions reach about 800 kB/s). Of course, to be fair, it is less expensive and open hardware. The weakest point of this interface is not using the full potential of STM32. It uses ...
by tzok
Wed Jan 13, 2021 7:40 pm
Forum: Others
Topic: Arduino experts
Replies: 18
Views: 1043

Re: Arduino experts

PeterS wrote: Wed Jan 13, 2021 4:02 pm The level converter I got looks like it is bidirectional, it has 5V and 3.3V pins, I am not sure it is strictly needed. The photo on github shows just a 5V I think.
It's not required, but it won't hurt.
by tzok
Mon Jan 11, 2021 12:22 pm
Forum: Others
Topic: Arduino experts
Replies: 18
Views: 1043

Re: Arduino experts

There is a USB Host Shield for the 328/168 Arduinos that can be used for this. There is a shield, with own MCU, and embedded firmware. Not only it makes the device bigger, project more complicated, but the cost of a USB shield and Arduino Uno is much higher than the cost of Arduino SAMD and a level...
by tzok
Sun Jan 10, 2021 4:55 pm
Forum: Others
Topic: Arduino experts
Replies: 18
Views: 1043

Re: Arduino experts

I guess it should be enough, but may require a change in pin mapping. It doesn't support 5 V logic, so it would require a level-converting circuit. I was wrong about Arduino Micro (ATmega32u4) - it doesn't support USB Host mode, it could work only the other way around, and emulate the USB mouse, but...
by tzok
Sat Jan 09, 2021 5:09 pm
Forum: Others
Topic: Arduino experts
Replies: 18
Views: 1043

Re: Arduino experts

No, this is not a Nano clone. Nano is a 8-bit AVR. Project requires a SparkFun SAMD21, which is a 32-bit ARM Cortex M0. It should be possible to make such adapter using Arduino Micro (ATmega32u4), but for sure it would require a lot of changes in the code. The entry level boards based on ATMega328P ...
by tzok
Fri Jan 08, 2021 7:36 pm
Forum: Others
Topic: Arduino experts
Replies: 18
Views: 1043

Re: Arduino experts

Yes, PlatformIO is a VSCode plugin. Yet compiling anything bigger in Arduino IDE is a nightmare. It is good for single file 8-bit AVR projects. You should choose the board you have, the project wiki mentions ATSAMD21G18 (SparkFun SAMD21 Mini Breakout). I have chosen a built-in Arduino SAMD board (Ar...
by tzok
Fri Jan 08, 2021 6:13 pm
Forum: Others
Topic: Arduino experts
Replies: 18
Views: 1043

Re: Arduino experts

This project is configured/structured to be compiled in PlatformIO IDE, not in Arduino IDE. If you really want to compile it in Arduino IDE, you have to rename the main.cpp to Usb2Ps2.ino and place it inside Usb2Ps2 folder. Then you have to extract lib folder content to you Arduino library folder. Y...
by tzok
Thu Jan 07, 2021 9:48 pm
Forum: Hardware
Topic: Atari ST keyboard -> USB interface
Replies: 11
Views: 529

Re: Atari ST keyboard -> USB interface

It doesn't have enough keys... but interfacing is straight forward. The Atari keyboard is a so-called "intelligent keyboard", and has an UART interface. All you need is the Arduino Pro Micro (ATMega32U4), and a few dozens lines of code to create a custom HID device. There's really no need for any cu...
by tzok
Mon Jan 04, 2021 5:47 pm
Forum: Hardware
Topic: USB to Ultrasatan power adapter on Ebay
Replies: 4
Views: 339

Re: USB to Ultrasatan power adapter on Ebay

It is a direct 5 V power line to the cartridge port. Cartridge power adapter doesn't load any data/address lines. Atari PSU has over current protection. I see no big risk of using it. I have a cartridge with Peter Putnik's ACSI-CF autoboot driver, and USB output to power ACSI-CF adapter.
by tzok
Sat Jan 02, 2021 8:23 pm
Forum: Hardware
Topic: USB to Ultrasatan power adapter on Ebay
Replies: 4
Views: 339

Re: USB to Ultrasatan power adapter on Ebay

My Ultrasatan originally came with a phone USB charger. It definitely runs on 5V. I have this one: http://toconasze.pl/ultrasatan.html (it costed me about 62 €). Original Jookie's US had a 5V linear voltage regulator (7805) on input, both Lotharek's, and Darko's versions don't have it, and require a...
by tzok
Sun Dec 27, 2020 7:20 pm
Forum: Hardware
Topic: Flashfloppy & USB Stick compatibility
Replies: 49
Views: 2555

Re: Flashfloppy & USB Stick compatibility

Disk format has been changed between TOS 1.00 and TOS 1.04. Maybe this is a problem? Newer TOSes use DOS compatible disk format. At some stage of FF development we went too far in optimizing it for a specific FastCopy III format, yet it seems to be corrected.
by tzok
Sat Dec 19, 2020 11:05 pm
Forum: Hardware
Topic: Flashfloppy & USB Stick compatibility
Replies: 49
Views: 2555

Re: Flashfloppy & USB Stick compatibility

I use mainly Sandisk USB drives, but at least one of them is fake, yet it works just fine.

I keep default settings for drive emulation, except for interface=shugart.
by tzok
Mon Dec 14, 2020 10:35 am
Forum: The Atari 8bit corner
Topic: Atari 800 power supply
Replies: 4
Views: 8392

Re: Atari 800 power supply

Ok, sorry, my fault. "Original" 800s are for me like Yetis ;) no one seen one in Western Europe ;) We got here just 800XL and 800XE (that's something you probably didn't hear about in the US).

9VAC is just a bare transformer, non-stabilized power supply.
by tzok
Sun Dec 06, 2020 9:48 am
Forum: Hardware
Topic: Wd1772 Gotek-Compatibility
Replies: 11
Views: 865

Re: Wd1772 Gotek-Compatibility

HxC/FF supports up to 3.42MB DD floppy images... There are adapters/brackets for GOTEK to mount it more easily in ST. If you can afford GOEX - it is great, but it doesn't offer anything more than GOTEK can be upgraded to (piezo speaker, and rotary encoder). The only real difference is it uses SD car...
by tzok
Sun Oct 18, 2020 11:16 am
Forum: Hardware
Topic: [MegaST] what hw upgrades do I need in 2020
Replies: 28
Views: 2444

Re: [MegaST] what hw upgrades do I need in 2020

All in one solution would be CosmosEx, but there are some alternatives: 1) Display/Monitors SCART-RGB to HDMI converter (and optionally HDMI to VGA converter) 2) Drive Emulation Gotek with HxC or FlashFloppy firmware 3) HDD replacement UltraSatan 4) TOS/ROM Switchable 1.04/2.06 5) Other stuff? NetUS...
by tzok
Sun Oct 11, 2020 7:24 pm
Forum: Hardware
Topic: Sm125 only one white line.
Replies: 3
Views: 448

Re: Sm125 only one white line.

Jpnl wrote: Sun Oct 11, 2020 9:05 amthe monitor only shows one horizontal white line when the st is turned on.
So it means a problem with a vertical (the low frequency one) beam deflection circuit.
by tzok
Tue Sep 29, 2020 6:34 pm
Forum: Website Discussions
Topic: VCF has a Mega STE and wants advice
Replies: 3
Views: 571

Re: VCF has a Mega STE and wants advice

I'd go either for Frontier Elite intro or Xenon 2, which was by far the most impressive game for STe I remember. As for the demoscene I'd go for WE WERE "at" by Oxygene.
by tzok
Mon Sep 28, 2020 7:09 pm
Forum: Hardware
Topic: ACSI 2 SD
Replies: 9
Views: 1372

Re: ACSI 2 SD

The peak performance DMA can deliver is about 1.8MB/s and it is possible to achieve with P. Putnik's ACSI CF interface (yet, it doesn't support autoboot).
2020-07-30 21.11.51.jpg

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