Difference between revisions of "Atari-mega-mega"
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In the nineteen-nineties I had an Atari ST repair shop. My own system started out as a mega 1 but was transformed a lot over the years. Basically all expansions I sold and liked, I put in my system, both as a proof of feasibility and of course to make my system more awesome. Here are a few (bad) pics detailing the setup...<br> | In the nineteen-nineties I had an Atari ST repair shop. My own system started out as a mega 1 but was transformed a lot over the years. Basically all expansions I sold and liked, I put in my system, both as a proof of feasibility and of course to make my system more awesome. Here are a few (bad) pics detailing the setup...<br> | ||
| − | Big Tower case of I forgot which brand with two 'levels', hinged in the back.<br> | + | Big Tower case of I forgot which brand with two 'levels', hinged in the back. Closed but with frond bezel removed<br> |
[[File:20141122 164715.jpg|300px]]<br> | [[File:20141122 164715.jpg|300px]]<br> | ||
| − | View of the lower level with the mainboard and many expansions.<br> | + | View of the lower level with the mainboard and many expansions. The daugterboard in the middle came with the tower and IIRC provided a 1.44 MB floppy and more<br> |
[[File:20141122 164804.jpg|300px]]<br> | [[File:20141122 164804.jpg|300px]]<br> | ||
Latest revision as of 22:46, 12 December 2014
In the nineteen-nineties I had an Atari ST repair shop. My own system started out as a mega 1 but was transformed a lot over the years. Basically all expansions I sold and liked, I put in my system, both as a proof of feasibility and of course to make my system more awesome. Here are a few (bad) pics detailing the setup...
Big Tower case of I forgot which brand with two 'levels', hinged in the back. Closed but with frond bezel removed
View of the lower level with the mainboard and many expansions. The daugterboard in the middle came with the tower and IIRC provided a 1.44 MB floppy and more
View #2 of the lower level with the mainboard and many expansions.To the right a big PC-type powersupply
Closeup of the connector of the memory expansion board which sits on top of a socketed PLCC chip
Instead of the original MC68000 8MHz DIL, an accelerator board that sported an overclocked 28MHz 68K
In the Mega's VME slot, an epic expansion card that provided an ISA bus and room for two 4MB simms. This RAM was not directly accessible in the address space.
The 'normal' system memory expansion board, populated with 4MB.
The VME expansion board again. This board also has room for larger TOS 2.06 OS. The ribbon cables that go up to the top level go to the ISA slot daughterboard.
Another pic of the same spot. In the foreground a good view of the 28MHz CPU expansion board.
View of the top level. In the far left corner you can catch a glimpse of the ISA slot with a Tseng ET4000 card in it.
View of the top level. The scsi disks that used to be here have been taken out. The 'plug' in the back is actually a hostadapter that provided real scsi.
More pics to try and get a better look at the VGA card that gave this Atari 1024x768 with 8 bit color, a huge step up from 640x400 monochrome or 320x200 4 bit color
Another failed attempt at that...
More of the CPU accelerator and some of the empty sockets where the original ROMs were.
