Search found 259 matches
- Sun Mar 10, 2024 9:51 am
- Forum: PSU (power supplies)
- Topic: Another ST series PSU ?
- Replies: 11
- Views: 223
Re: Another ST series PSU ?
It rather is an RPD-60A... no need for 3.3V in the ST.
- Sun Feb 18, 2024 10:07 am
- Forum: RAM UPGRADES
- Topic: Issue with the STM 4MB RAM UPGRADE
- Replies: 18
- Views: 534
Re: Issue with the STM 4MB RAM UPGRADE
He wrote 68Ohm, so 68R - all fine.
Make sure you haven't damaged any traces between chips. Which exactly upgrade were you trying to install?
BTW, I still say that it is enough to cut one resistor to safely disable the on-board RAM on the ST.
Make sure you haven't damaged any traces between chips. Which exactly upgrade were you trying to install?
BTW, I still say that it is enough to cut one resistor to safely disable the on-board RAM on the ST.
- Sat Feb 17, 2024 1:45 pm
- Forum: HARDWARE DISCUSSIONS
- Topic: Vortex AT-Once PC AT Emulator and STE Booster board
- Replies: 12
- Views: 345
Re: Vortex AT-Once PC AT Emulator and STE Booster board
AT-Once has only DIP socket, while STe has PLCC CPU. On that auction link you gave in the 1st post, there is a MegaBus adapter, but if you look closely at it, you will notice, that the PCB is universal and can be either MegaBus or PLCC adapter: https://obrazki.elektroda.pl/9253080700_1708177526_thum...
- Sat Feb 17, 2024 10:41 am
- Forum: HARDWARE DISCUSSIONS
- Topic: Vortex AT-Once PC AT Emulator and STE Booster board
- Replies: 12
- Views: 345
Re: Vortex AT-Once PC AT Emulator and STE Booster board
In STf there is no option to keep the shielding in place... at least not without cutting a big hole in it.
My card has a Harris-branded 80C286 CPU in it. It is a CMOS/low-power version.
My card has a Harris-branded 80C286 CPU in it. It is a CMOS/low-power version.
- Sat Feb 17, 2024 10:26 am
- Forum: HARDWARE DISCUSSIONS
- Topic: Vortex AT-Once PC AT Emulator and STE Booster board
- Replies: 12
- Views: 345
Re: Vortex AT-Once PC AT Emulator and STE Booster board
There were adapters for MegaBus and PLCC socket.
- Sat Feb 17, 2024 9:35 am
- Forum: HARDWARE DISCUSSIONS
- Topic: Vortex AT-Once PC AT Emulator and STE Booster board
- Replies: 12
- Views: 345
Re: Vortex AT-Once PC AT Emulator and STE Booster board
That's strange as 286s or even most 386s used in PCs never required heatsinks. I have AT-Once in my 1040 STf machine and it works without any heatsink. To be more precise I have this AT-Once+ replica: http://atari.myftp.org/atari16bit/atonce/atonce.html I know the Author had serious difficulties wit...
- Tue Sep 19, 2023 9:59 am
- Forum: MEMBER BLOGS
- Topic: exxos 3D soldering machine build
- Replies: 89
- Views: 31781
Re: exxos 3D soldering machine build
I'm guessing you're aiming at something like this, but with an automated solder feed via the modified extruder:
- Thu Aug 17, 2023 10:02 am
- Forum: HARDWARE ISSUES
- Topic: MC68HC000 seems to break STE programs?
- Replies: 7
- Views: 674
Re: MC68HC000 seems to break STE programs?
ICs from different manufacturers may have slightly different pin profiles, thus a new CPU may not have good contact with a socked in which another CPU has been sitting for the last 30+ years. When swapping a CPU for another, you must use Deoxid or a similar product on the socket, especially because ...
- Thu Jul 20, 2023 9:21 pm
- Forum: HARD DRIVES
- Topic: ACSI2STM problems
- Replies: 48
- Views: 2993
Re: ACSI2STM problems
I can see, that you are using a micro-SD breakout board, with a TTL-level converter. This converter is not needed here, as both the SD card and BluePill are using 3.3V logic.
- Wed Jul 19, 2023 9:06 pm
- Forum: HARD DRIVES
- Topic: ACSI2STM problems
- Replies: 48
- Views: 2993
Re: ACSI2STM problems
It sees the card, but the current firmware does not support a built-in ACSI driver, instead, it has a Gemdrive driver. Both boot jumpers need to be set to 0 position, to run Gemdrive mode.