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It helps build a picture where our "good traffic" is coming from..
Thanks :)
Soph's Mega ST4
- SophieRose
- Posts: 33
- Joined: Mon Dec 28, 2020 4:47 am
- Location: Leamington Spa
- Contact:
Soph's Mega ST4
Thought I'd share my Mega ST4, now I've got it all working together. only thing I haven't added is the T28 but that may go into my spare Mega.
Specs:
Mega ST4
TOS Switcher
AT-Speed 286 16MHz
68881 Copro card
PICO PSU
Specs:
Mega ST4
TOS Switcher
AT-Speed 286 16MHz
68881 Copro card
PICO PSU
Musician and Atari ST user. https://sophie-rose.bandcamp.com
Mega ST4 T28, 1040STE & 520STM, Amiga 600, Link 480Z, Amstrad 6128 plus, Timex2048, C128, C64, MSX HB201P. Plus too many more.
Mega ST4 T28, 1040STE & 520STM, Amiga 600, Link 480Z, Amstrad 6128 plus, Timex2048, C128, C64, MSX HB201P. Plus too many more.
Re: Soph's Mega ST4
Joining the exxos forum high-rise club! 
- SophieRose
- Posts: 33
- Joined: Mon Dec 28, 2020 4:47 am
- Location: Leamington Spa
- Contact:
Re: Soph's Mega ST4
Here she is doing her 286 party trick.
Tower of Power
Musician and Atari ST user. https://sophie-rose.bandcamp.com
Mega ST4 T28, 1040STE & 520STM, Amiga 600, Link 480Z, Amstrad 6128 plus, Timex2048, C128, C64, MSX HB201P. Plus too many more.
Mega ST4 T28, 1040STE & 520STM, Amiga 600, Link 480Z, Amstrad 6128 plus, Timex2048, C128, C64, MSX HB201P. Plus too many more.
Re: Soph's Mega ST4
Well done! I have to agree, if you put small figures around the motherboard, it would
almost look like a futuristic city!
almost look like a futuristic city!
Welcome To DarkForce! www.darkforce.org "The Fuji Lives.!"
Atari SW/HW based BBS-Telnet:darkforce-bbs.dyndns.org 1040
Atari SW/HW based BBS-Telnet:darkforce-bbs.dyndns.org 1040
Re: Soph's Mega ST4
That is super cool!!!
Re: Soph's Mega ST4
Nice setup @SophieRose. I have the same AT Speed board on my H5. You might want to get hold of a 80287 co pro on eBay there are plenty around.
- rubber_jonnie
- Site Admin

- Posts: 15118
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: Soph's Mega ST4
Interesting Stack you have there @SophieRose
I presume that the FPU board is the one in the Megabus slot?
I'd like some sort of video adapter for the Mega of mine that has that bus free. Two of mine have an IDE adapter in that slot.
I also have a similar PC card in one, they are 'interesting'
Nice work.
I presume that the FPU board is the one in the Megabus slot?
I'd like some sort of video adapter for the Mega of mine that has that bus free. Two of mine have an IDE adapter in that slot.
I also have a similar PC card in one, they are 'interesting'
Nice work.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
- mrbombermillzy
- Moderator

- Posts: 2360
- Joined: Sun Jun 03, 2018 7:37 pm
Re: Soph's Mega ST4
I was thinking of doing a shout round at some point, to see how many people want a MegaBus to ISA adapter.rubber_jonnie wrote: Thu Dec 16, 2021 8:41 am I'd like some sort of video adapter for the Mega of mine that has that bus free.
Then go and ask Frank Lukas very nicely if he would interested in building up a batch.
Was just waiting for Xmas to be over really before I asked, as people may have some cash by then.
@SophieRose Nice system BTW. Truly lives up to the name 'Mega'.
Glad you found a PC Speed eventually.
- rubber_jonnie
- Site Admin

- Posts: 15118
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: Soph's Mega ST4
I'd definitely be interested in a Megabus ISA adapter even if it was just a PCB I had to build, also would like to get my hands on a VME to ISA adapter for my MSTE.mrbombermillzy wrote: Thu Dec 16, 2021 9:02 amI was thinking of doing a shout round at some point, to see how many people want a MegaBus to ISA adapter.rubber_jonnie wrote: Thu Dec 16, 2021 8:41 am I'd like some sort of video adapter for the Mega of mine that has that bus free.
Then go and ask Frank Lukas very nicely if he would interested in building up a batch.
Was just waiting for Xmas to be over really before I asked, as people may have some cash by then.
@SophieRose Nice system BTW. Truly lives up to the name 'Mega'.
Glad you found a PC Speed eventually.![]()
Apologies @SophieRose we
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
- frank.lukas
- Posts: 814
- Joined: Fri Jan 19, 2018 11:52 am
Re: Soph's Mega ST4
You can buy from me Nova VME adapter and/or STGA Mega ST Bus adapter as ready build up and tested or complete parts set incl. pcb ...
https://forum.atari-home.de/index.php?topic=16211.0
https://forum.atari-home.de/index.php/t ... #msg216246
https://forum.atari-home.de/index.php?topic=16211.0
https://forum.atari-home.de/index.php/t ... #msg216246
