Zenith H-100 Service Manual page 33

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Ty pe ••.••..•.••••..••••..•• WD 1
797 .
Drives Supported •••...•••.• Up to four each.
5-1/4" .•.••.•.••.••.••••• Single/double-sided, 48/96
TPI, single/double density.
Capacity (formatted) ••• 80K, 160K, 320K, or 640K;
depending on the number of
sides and density.
Track Format .•••.••.•.. 4K, eight sectors of 512 bytes
each.
Stepping Speed ••••••••• 6 milliseconds per track or
faster.
8" ......•••..•..•...•.... Single/double-sided,
single/double density.
Interface type ......••• Shugart 850 or equivalent.
Data Separator .•....••••••• Phase-locked loop.
Precompensation .....•.••••. Variable independently for
both 5-1/4" and
8"
sizes.
Data Transfer •.••••.••••••• Programmed using wait states,
interrupt or polling.
The Heath Company reserves the right to discontinue
products and to change specifications at any time
without incurring any obligation to incorporate new
features in products previously sold.
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