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47 lines
1.2 KiB
Markdown
47 lines
1.2 KiB
Markdown
Disk: TI DS990 FD1000
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=====================
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The Texas Instruments DS990 was a multiuser modular computing system from 1998,
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based around the TMS-9900 processor (as used by the TI-99). It had an 8" floppy
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drive module, the FD1000, which was a 77-track, 288-byte sector FM/MFM system
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with 26 sectors per track. The encoding scheme was very similar to a simplified
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version of the IBM scheme, but of course not compatible. A double-sided disk
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would store a very satisfactory 1126kB of data; here's one at <a
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href="https://www.old-computers.com/museum/computer.asp?st=1&c=1025">old-computers.com</a>:
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<div style="text-align: center">
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<a href="https://www.old-computers.com/museum/computer.asp?st=1&c=1025">
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<img src="tids990.jpg" style="max-width: 60%" alt="A DS990 at old-computers.com"></a>
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</div>
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FluxEngine will read and write these (but only the DSDD MFM variant).
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Reading discs
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-------------
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Just do:
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```
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fluxengine read tids990
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```
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You should end up with an `tids990.img` which is 1153152 bytes long.
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Writing discs
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-------------
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Just do:
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```
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fluxengine write tids990 -i tids990.img
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```
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Useful references
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-----------------
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- [The FD1000 Depot Maintenance
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Manual](http://www.bitsavers.org/pdf/ti/990/disk/2261885-9701_FD1000depotVo1_Jan81.pdf)
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