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)