Epson Equity III Product Support Bulletin page 20

HDD Controller WD1002S-WX2 (8-bit)
FACTORY SETTINGS
Jumper Position
W1 1 to 2
W-2 1 to 2
1 to 2
W3
2 to 3
W4
W5 * hard-wired 1 to 2
2 to 3
W6
W7 * hard-wired 1 to 2
* No jumper pins - 1 and 2 are connected by a PCB board etch.
Description
Required for this configuration.
Required for this configuration.
BIOS ROM is enabled (on controller).
Device address 320H.
BIOS ROM size (32K or 64K).
Reduced write current (< = 8 heads).
IRQ 5.
Model number--j
'--Extra jumper