Atari-Forum

Unfortunately, the two TOS chips were unsalvageable due to rust. Several legs came off quite easily in the socket and in my fingers. The 68030 and 68882 chips have one or more pins broken off in their sockets. Some of the other chips may be in the same condition. The two long chips on the Mega boar...

If you get to a point where you need to figure out where a misisng trace went. I can make detailed pictures of a working board.

Sent PM. One MegaSTE board.

I have no idea if this applies to the CT60 or CT63, but the CT60E doesn't boot at 66Mhz, it needs a little more. Setting 67Mhz in 030 mode does the trick for me.

Putting a momentary switch between motherboard power OK and GND is ok to start the TT. It's probably better in the long term to use something that makes the contact automatically after a few seconds to start the TT, I used a little PIC microcontroller to pulse once after 5 secs when the tt gets power.

The power OK pin needs a short pulse to GND, that will boot the TT.

If the PAK and SST have anything in common it might be that ACSI is just real flaky with UltraSatan/CosmosEX/Gigadrive. I only got harddisk working properly with scsi converters that have buffers. Try the R/W reliabilty test from https://atari.8bitchip.info/ahpt.html it might tell you that there are...

Shugart/Atari D0=A:\, D1=B:\ I haven't found any need to connect the M0 line on my goteks(FlashFLoppy & HxC), just leave it open. Atari and plenty 3rdparties usually assume that drives for internal or external use are configured as D0. The external port can carry D0 and D1 for early st models withou...

Out of curiosity, how would you fix it? :-) Dexterslab done it before on his TT. http://www.mr2.net/marknias/atari_tt030.html#Keyboard I have Mega ST keyboard with same kind of symptoms (keys are not completely defective, but not reliable anymore)... Is it same problem with Mega ST keyboard or some...

Hooking up to a tv makes me think you want to use a scart cable. A removed modulator could possibly mean that there was no csync circuit installed after removal. Scart needs composite video(made by modulator) or csync signal to get a image on screen. Csync isn't a very complex circuit and can be fou...

From my experience the ce_raspbian_stretch_2018-05-10.img release had issues with the usb hub on the V1. For the v1 i used the yocto distro and used the script to get it up to date. I prefered rpi-ce-run-real over ce_raspbian_2017-01-03, because it boots faster. Bad news is that you have to wait unt...

Looks like the update zip is not on the website right now (404). Maybe the update is getting updated.

I had issues with upgrading to the latest version on a CosmosEx V1. The raspbian and yocto releases were all breaking when updating. My fix to get the latest software/firmware on a V1? Follow jookies guide on: http://joo.kie.sk/?page_id=518 , after running this on a clean yocto distro i'm now all up...

I have never actually checked if the drive heads move simultaneously. I did notice that the drive motors spin together and with 2 goteks A and B, that both displays update the current track and disk side. I will check if the heads all move at the same time or not. I slapped some arduino jumper wires...

The way I got swappable drives working on MEGAST and MEGASTE was to separate and cut the DS0 wire in the ribbon cable.
And then i got creative by having 2x 3-dipswitchblocks. #1 with DS0, #2 with DS1 and let them switch between the cut ribbon cable and the 2 external DS's.

Atari floppydrive connections are 1on1 from motherboard to drive.
I always mark the 1 side of motherboard connectors (floppy/scsi/acsi/serial) and I mark the drive pin1 on bottom/top/back of drives.

My megaste came with a gotek(and buttonhole cut), i placed a sony mpf920 behind a really yellowed mitsumi atari st cover and after making room for the ejec button it fits relaxed. Perhaps it is missing a very important fact: I am trying to adapt a PC floppy disk in an ATARI ST. Other Atari models s...

My megaste came with a gotek(and buttonhole cut), i placed a sony mpf920 behind a really yellowed mitsumi atari st cover and after making room for the ejec button it fits relaxed.