A&J MicroDrive System-100
The A&J MicroDrive System-100 is a tape drive almost identical to the Exatron Stringy Floppy.
Entrepo / A&J MicroDrive was a company that spun off from Exatron. Initially they sold tape drives with the same drive mechanisms and cassettes (called "wafers") as the Exatron Stringy Floppy, then switched to a different drive mechanism from BSR and "microwafer" cassette that is conceptually the same as the Exatron Stringy Floppy, but with different dimensions. The BSR & Exatron drives & wafers are not compatible with each other, even though at least one example BSR-drive system also called their tapes "Stringy Floppy".
The same drive was sold in at least a few other products for other platforms. Some examples:
- Rotronics WafaDrive for the ZX Spectrum
- Entrepo Quick Data Drive Model 8500 for Commodor 64 & VIC-20 (also rebadged by at least Phonemark and NCS)
- Spectravideo SVI-777 Stringy Floppy Drive for MSX systems
The wafers were made & sold by Entrepo, and also rebadged by at least Phonemark and Smith Corona.
There is no software manual for the Model 100 version of this drive.
Scanning the M100SIG yields a few bits of instruction.
This review gives a few commands and procedures in passing.
Review of A&J System 100
The "tape operating system" software was distributed from their BBS. Customers were instructed to dial the BBS and download the software and create their own tape backups.
TRS-80 Model 100
http://www.club100.org/library/ups/tosa.100 A&J System 100 TOS for TRS-80 Model 100, version A
http://www.club100.org/library/ups/tosb.100 A&J System 100 TOS for TRS-80 Model 100, version B
http://www.club100.org/library/ups/tosc.100 A&J System 100 TOS for TRS-80 Model 100, version C
http://www.club100.org/library/ups/tosd.100 A&J System 100 TOS for TRS-80 Model 100, version D
Originally found at http://www.club100.org/library/libups.html in the Robert Benson section.
You can bootstrap these onto the 100 over the serial port a few different ways
- Mac/Linux/BSD: https://github.com/bkw777/dlplus : (dl -b tosd.100)
- Mac/Linux/BSD: https://github.com/bkw777/pdd.sh : (pdd bootstrap tosd.100)
- Windows: https://github.com/bkw777/tsend : (.\tsend.ps1 -file tosd.100)
- Generic comm program & TELCOM: http://bitchin100.com/wiki/index.php?title=Text_File_Transfer_using_Hyperterminal
Other software besides the OS:
There is some info in the M100SIG archive, particularly the "reviews" dir.
See pg 33: Portable-100 Magazine, 1986 April pg. 33
Related / Other Platform Versions: