Epson Equity 386/20 Product Support Bulletin(s) - Page 22

PSB No: S-0086A Page: 4 of 8 Q12. What extended hard drive support is available in the new ROM BIOS drive tables that come in the Equity 386/20? A. The Seiko-Epson BIOS will directly support hard drives that range in size 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? A. The ROM BIOS table in the Epson Product Support Guide is correct. The ROM BIOS supports disk drives up to type 58. The correct data for types 5658 are listed below: TYPE 56 57 58 TYPE ESDI ESDI ESDI CYL HDS Sectors 967 5 34 967 7 34 967 9 34 Landing Zone 967 967 967 MB 80.3 112.4 144.5 Q14. What hard drive controllers can be used in the Equity 386/20? A. Tested hard drive controllers for the Equity 386/20 include: Western Digital Western Digital Western Digital Western Digital Adaptec ESDI WD-1007 WD-1006S-WAH WD-1006V-MM1 ACB2320 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.