In 1982 I had the opportunity to design a hard disk interface for use with
SWTPC 6800 and 6809 Computer Systems. The drives were to be the new 5 1/4 inch
Seagate Technology ST506 style (MFM) and the computer interface was to use the
Shugart Associates System Interface (SASI). SASI became the SCSI standard that
is still used today.
Test Interface and Drive | 6800 | 6809 |
Format Drive | 6800 | 6809 |
FLEX Drivers | 6800 | 6809 |
Install Drive into FLEX | 6800 | 6809 |
Park Head | 6800 |
(I have not tested these files.)
SASI Interface Schematic (PDF 700KB )
XIBEX S1410 Winchester Disk Controller
ELEKTRA SS-50 SCSI Interface (Larger image)
XEBEC Disk Controller (Larger image)