Epson Equity 386/20 Product Support Bulletin page 22

Q12. What extended hard drive support is available in the new ROM BIOS drive
tables that come in the Equity 386/20?
The Seiko-Epson BIOS will directly support hard drives that range in size
A.
from 10 Mb up to 153 Mb. Larger size drives can be used by using a
supplementary BIOS for the hard disk controller that is installed in the
machine. There is direct support for the Seagate ST-251 and the ST-4096
hard disks as well as several ESDI drives. SCSI drives have their own
controllers attached to the drive and should work correctly when attached to
the bus with a host adaptor.
Q13. The service manual has a listing of the ROM BIOS drive support table that is
different than the drive table listed in the Product Support Guide. Which of
the tables is correct?
The ROM BIOS table in the Epson Product Support Guide is correct. The
A.
ROM BIOS supports disk drives up to type 58. The correct data for types 56-
58 are listed below:
TYPE
56
57
58
Q14. What hard drive controllers can be used in the Equity 386/20?
Tested hard drive controllers for the Equity 386/20 include:
A.
Q15. Does the Equity 386/20 have cache memory?
A. No. The Equity 386/20 provides high speed (80ns) memory in a page
interleave architecture operating at up to 0 wait states. This type of
architecture allows a more affordable machine than one that uses cache
memory.
CYL HDS Sectors
TYPE
967
ESDI
ESDI 967
ESDI 967
Western Digital
Western Digital
Western Digital
Western Digital
Adaptec
PSB No: S-0086A
Page: 4 of 8
5 34
7 34
9 34
ESDI
WD-1007
WD-1006S-WAH
WD-1006V-MM1
ACB2320
Landing
Zone MB
967 80.3
112.4
967
144.5
967