Epson Equity I Product Support Bulletin(s) - Page 29

A. The Western Digital WD1002A - WX1 or WX2 hard disk controller is recommended

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Page 29 highlights

PSB No: S-0060A Page: 2 of 8 Q5. Is it possible to disable the Equity I floppy disk controller? A. No. the floppy disk controller cannot be disabled. Hard Disk Drives (See Hardware Update information on page 7) Q6. Does the Equity I have enough power to support 2 floppy disk drives and a hardcard type hard disk drive? A. Yes, although the power supply is rated for 53 watts the Equity I main system board was designed with many low power custom C - MOS components which draw very little current. In order to conserve available power, it is recommended to use a hardcard which draws 12 watts or less. Q7. Is the Plus Development Hardcard 20 compatible with the Equity I? A. Yes, the manual installation procedure in the Plus Development installation instructions must be followed. Q8. Can a hardcard be installed in addition to a hard disk drive? A. No, this is not recommended as it may overload the power supply. Q9. What type of hard disk does Epson supply with the Equity I and what is the average disk access time. A. Epson originally supplied a half - height, 5.25", 20 MB, Epson model HD- 860 hard disk (89ms) with controller. This drive has since been replaced with the HMD - 720 with an average access time of 69ms. Q10. What hard disk controllers can be used? A. The Western Digital (WD1002A - WX1 or WX2) hard disk controller is recommended for use in the Equity I for MFM type HDDs. Most other IBM PC/XT compatible controllers will also work.

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PSB No: S-0060A
Page: 2 of 8
Q5. Is it possible to disable the Equity I floppy disk controller?
A. No. the floppy disk controller cannot be disabled.
Hard Disk Drives (See Hardware Update information on page 7)
Q6. Does the Equity I have enough power to support 2 floppy disk drives and a
hardcard type hard disk drive?
A. Yes, although the power supply is rated for 53 watts the Equity I main system board
was designed with many low power custom C - MOS components which draw
very little current.
In order to conserve available power, it is recommended to
use a hardcard which draws 12 watts or less.
Q7. Is the Plus Development Hardcard 20 compatible with the Equity I?
A. Yes, the manual installation procedure in the Plus Development installation
instructions must be followed.
Q8. Can a hardcard be installed in addition to a hard disk drive?
A. No, this is not recommended as it may overload the power supply.
Q9. What type of hard disk does Epson supply with the Equity I and what is the
average disk access time.
A. Epson originally supplied a half - height, 5.25”, 20 MB, Epson model HD- 860 hard
disk (89ms) with controller.
This drive has since been replaced with the
HMD - 720 with an average access time of 69ms.
Q10. What hard disk controllers can be used?
A. The Western Digital (WD1002A - WX1 or WX2) hard disk controller is recommended
for use in the Equity I for MFM type HDDs.
Most other IBM PC/XT compatible -
controllers will also work.