Search found 167 matches

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: 326

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: 594

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: 594

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: 594

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.
by tzok
Sat Dec 07, 2019 10:22 pm
Forum: Hardware
Topic: Atari ST - dumping/reading ROM chips - which IC?
Replies: 6
Views: 677

Re: Atari ST - dumping/reading ROM chips - which IC?

Yes, 27C1000 are not JEDEC compatible, and thus are missing from MiniPro/XGpro database. You can do a simple adapter from a DIL socket and a piece of wire (basically the same you'd need for using 27C010 instead of 27C1000/Mask ROMs), and program them as 27C010.
by tzok
Sat Dec 07, 2019 9:55 pm
Forum: Hardware
Topic: 4xTOS selection for STE?
Replies: 19
Views: 594

Re: 4xTOS selection for STE?

Software switching could be tricky, as there is a risk, that Atari would boot faster, than your uC based switcher. The ROM switching thingy would need to ensure, that reset line is held low on power up until the switcher firmware boots up. Another trick would be to keep keyboard working while comput...
by tzok
Sat Dec 07, 2019 11:21 am
Forum: Hardware
Topic: 4xTOS selection for STE?
Replies: 19
Views: 594

Re: 4xTOS selection for STE?

Same as with 2 TOSes and 1 switch, but you'll have 2 switches then. You may also use a binary encoded 4-position rotary switch. JEDEC compatible EPROMs were made up to 8 Mbits... one set of STe ROMs is 2x 1 Mbit.
by tzok
Wed Dec 04, 2019 6:08 pm
Forum: Hardware
Topic: Another Smallymouse2
Replies: 6
Views: 466

Re: Another Smallymouse2

Original firmware strong drives the mouse button lines, which is very wrong. You need to either change these outputs in software to act as open-collector type or add a diode in series (cathode towards ATMega). Otherwise, you will make a short circuit when pressing FIRE on joystick on port 1, as RMB ...
by tzok
Fri Nov 29, 2019 11:32 pm
Forum: Hardware
Topic: Atari ST HDMI solution from The backofficeshow
Replies: 10
Views: 1528

Re: Atari ST HDMI solution from The backofficeshow

Not every VGA2HDMI converter will work, but I have one that works. Of course it still requires the TV to accept 15 kHz over the HDMI, but if you have one, then you may use it for both - ST LOW/MED as well as for ST HIGH modes.
by tzok
Tue Nov 26, 2019 6:25 pm
Forum: FireBee
Topic: Mini-cases colors
Replies: 7
Views: 6304

Re: Mini-cases colors

For TT - I don't know, but for ST the RAL7044 is definitely too light, on the other side, there is RAL7030, which is slightly too dark (but much closer).

For XL series RAL1015 is almost a perfect match.
by tzok
Tue Nov 26, 2019 9:15 am
Forum: Hardware
Topic: 1040STf chip location help wanted
Replies: 5
Views: 372

Re: 1040STf chip location help wanted

Image
by tzok
Mon Nov 25, 2019 9:03 am
Forum: HxC Floppy Emulator
Topic: HxC Firmware for Gotek updates.
Replies: 20
Views: 16457

Re: HxC Firmware for Gotek updates.

OSD works great, but only in ST LOW/MED. Technically it could be connected to MONO out, but either to MONO or to COLOR. It also supports separate H+V sync signals, what is not stated here.
by tzok
Sat Nov 09, 2019 12:50 pm
Forum: Hardware
Topic: Atari ST - dumping/reading ROM chips - which IC?
Replies: 6
Views: 677

Re: Atari ST - dumping/reading ROM chips - which IC?

If you have 6 28 pin ROMs, then you may read them as 27C256 EPROMs. Only 1 Mbit ROMs had different pinout than EPROMs, 256 kbit ROMs are pin compatible with EPROMs (as for reading of course). Reading does not require any vendor specific conditions, so you may choose any IC manufacturer you want. For...
by tzok
Wed Nov 06, 2019 7:08 pm
Forum: Hardware
Topic: 520STm Boot Issues
Replies: 2
Views: 432

Re: 520STm Boot Issues

Use a SCART RGB cable instead. You should see a desktop, but without floppy drive icons.
by tzok
Mon Nov 04, 2019 2:51 pm
Forum: Other emulators & tools
Topic: Gotek Vs. HD 1.44 images
Replies: 5
Views: 2982

Re: Gotek Vs. HD 1.44 images

You can use empty image, I've attached before. E6 in STe does nothing, except enabling HD format option in TOS, but the machine still lacks hardware to read/write HD disks. HD floppies have twice data transfer rate as double density ones.
by tzok
Sun Oct 27, 2019 3:24 pm
Forum: Hardware
Topic: 520STm External Drive Solution
Replies: 2
Views: 779

Re: 520STm External Drive Solution

If you manage to get Atari-specific 14-pin FDD plug, wiring a Gotek to it, is not a problem. Another alternative is to get a SF314 drive and replace floppy mechanism with Gotek.
by tzok
Fri Oct 25, 2019 8:30 am
Forum: Hardware
Topic: NetUSBee USB drivers package v5
Replies: 44
Views: 4467

Re: NetUSBee USB drivers package v5

BIGDOS has to be the very first thing in AUTO folder, then POOLFIX4 (only for TOS 1.x), then USB, STORAGE, and NETUSBEE.It works but it is slow (it won't let you run the badapple from USB stick). I think it is not much faster than Gotek in Burst Mode (shame that HxCMount has been abandoned).
by tzok
Wed Oct 23, 2019 5:03 pm
Forum: Hardware
Topic: Dead HD recovery (Mini S)
Replies: 8
Views: 868

Re: Dead HD recovery (Mini S)

Drive just doesn't spin up or it shorts the PSU?
by tzok
Wed Oct 23, 2019 5:52 am
Forum: Hardware
Topic: Dead HD recovery (Mini S)
Replies: 8
Views: 868

Re: Dead HD recovery (Mini S)

The drive may be mechanically seized, try to spin it with a regular ATX power supply, maybe it will start.
by tzok
Sun Sep 29, 2019 9:06 am
Forum: Hardware
Topic: Help Forget Me Clock
Replies: 25
Views: 4784

Re: Help Forget Me Clock

Which software you are talking about?
by tzok
Fri Sep 27, 2019 9:09 pm
Forum: Hardware
Topic: Help Forget Me Clock
Replies: 25
Views: 4784

Re: Help Forget Me Clock

There is a quite a long topic about my investigation and a hardware clock:
https://www.exxoshost.co.uk/forum/viewt ... f=10&t=544

...and I was wrong, the limit is 2059 (year "F9" in pseudo-BCD, so 1900 + 159), not 2027 (1900 + 127, because it is 1980 + 127).
by tzok
Fri Sep 27, 2019 7:45 am
Forum: Hardware
Topic: Help Forget Me Clock
Replies: 25
Views: 4784

Re: Help Forget Me Clock

neanderthal wrote:aint the file year in Gemdos same as standard Dos(and other systems) 1980 as year 0..And then 7bit +offset from that.
From what I remember in GEMDOS - yes (0 = 1980), but in XBIOS - not (0 = 1900).
by tzok
Thu Sep 26, 2019 11:45 am
Forum: Hardware
Topic: STe - Bad DMA Chip
Replies: 188
Views: 50845

Re: STe - Bad DMA Chip

On my HC STe We Were @ works ok, however it displays some garbage on the left border in the full screen distorter, same with {closure}: https://obrazki.elektroda.pl/8226079300_1569498203_thumb.jpg On the other hand, the Atari ST 32768 Colour Showdown seems to work just fine: https://obrazki.elektrod...
by tzok
Thu Sep 26, 2019 9:16 am
Forum: Hardware
Topic: Help Forget Me Clock
Replies: 25
Views: 4784

Re: Help Forget Me Clock

DeskCart! probably not, because DeskCart! is not using IKBD, it is a cartridge, and uses a different protocol. I've made my own IKBD filter/injector device using Arduino Nano to intercept IKBD date/time calls and substitute them by own generated ones. So my Atari thinks it is "talking" wit...
by tzok
Thu Sep 26, 2019 9:11 am
Forum: Hardware
Topic: External hard drive with ICD software only boots on reset
Replies: 6
Views: 954

Re: External hard drive with ICD software only boots on reset

Actually the Atari bulletin was recommending to change a capacitor and resistor in the reset circuit of the Megafile, but here is the FIX for you:
https://www.exxoshost.co.uk/forum/viewt ... =17&t=2175

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