An ATR8000 (https://www.atarimagazines.com/v3n4/ATR8000.php, http://atariki.krap.pl/index.php/ATR_8000) clone formerly made by SWP and the Sally 1 by RSD (Rainer Storz Datentechnik)
Inspired by the repair of a Sally 1, which had been found in the attic, the Atari-Bit-Byter-User-Club (www.abbuc.de) encouraged Marc and me to reproduce this lovely machine in a more compact way, though keeping a sort of retro-style.
We used 3 16V8 GALs in order to reduce chip count and replaced the WD1797 floppy-disc-controller by the more compact WD1772 variant. Caveat: This chip is not designed for HD (500kbit/s) speed used by 3 1/2" and 8"-drives, although most can be overclocked to that speed. Only use WD1772PH-02-02 version and at your own risk. If you can get hold on an AJAX chip used in e.g. ATARI STE, use this one as it is rated for HD and even ED speed (16/32 Mhz).
- Operates either as standalone CP/M system or versatile ATARI 8-bit interface (up to 4 floppies, Centronics, RS232)
- Z80-CPU at 4Mhz
- 128k static RAM (64k usable)
- 8k EPROM
- WD1772 FDC (or AJAX FDC)
- Z80-CTC timer/counter
Additionally we have added:
- 60.000 baud high speed SIO (Pokey divisor 8, drive responds to the "Get Speed Byte" command '?')
- Track buffer
- HD-support for 3 1/2" disks (ca. 1MB). (Format is same as 8", 2 sides, 77 tracks, 26 sectors/track, 256 bytes per sector)
- another (better) case and Shugart connector at the back.
- PCB-layout for other case
- improve 3 1/2" HD format
- read/write 512-bytes (MS-DOS) sectors for my Atari FAT-16 DOS
- add SD-card?
Original Sally 1 repaired (5 ICs were out of order) and tested with a 40Trk single sides drive.
First version of Sally 2 PCB and a case
ATR8000 CP/M running on Sally 1 (todo: Add picture of the Sally CP/M version, which is apart from the messages identical to the ATR8000)
- Marc has completed a new manually routed PCB and 3 supporting PCBs for swicthes and connectors
- ATARI can read/write 3 1/2 HD disks formtted like 8"-disks (26sec x 77 trks x 2 sides = ca. 1MB) The challange was to allow for HD even for 300 rpm drives, instead of 360rom used by 8" and 5 1/4" drives.
- A full blown FAT-12 DOS for the ATARI is close to be finished, some more testing and minor additional features required/appreciated
- ABBUC now owns a Bumbu X1-carbon 3D printer, which has immediately been used to dress Sally-2 appropirately.
