EIF-98BW (ELECOM)

C bus bus master SCSI-2 board.Two 8-deep dip switches and 4-djunct jumpers
There is one switch and three jumper switches each.

The old web page of ELECOM does not have the information of whether it corresponds to HDD more than 1GB.
It is not compatible with Windows 95.

・ 8-station dip switch SW1: SCSI-ID of board, interrupt level, setting of DMA channel
1-2-3: Board SCSI-ID setting
  OFF-OFF-OFF: ID = 0
  ON-OFF-OFF: ID = 1
  OFF-ON-OFF: ID = 2
  ON-ON-OFF: ID = 3
  OFF-OFF-ON: ID = 4
  ON-OFF-ON: ID = 5
  OFF-ON-ON: ID = 6
  ON-ON-ON: ID = 7 (factory setting)
4-5-6: Setting interrupt level
  OFF-OFF-OFF: INT 0 (factory setting)
  ON-OFF-OFF: INT 1
  OFF-ON-OFF: INT 2
  ON-ON-OFF: INT 3
  OFF-OFF-ON: INT 5
  ON-OFF-ON: INT 6
7-8: DMA channel
  OFF-OFF: DMA 0
  OFF-ON: DMA 2 (available only for PC-9801E / F / U / UF / XA)
  ON-ON: DMA 3 (factory setting)

・ 8 stations dip switch SW2: ROM address, main unit model, setting of valid / invalid of SCSI_BIOS
1-2-3: Normal mode ROM address setting
  OFF-OFF-OFF: D0000h to D0FFFh
  ON-OFF-OFF: D2000h to D2FFFh
  OFF-ON-OFF: D4000h to D4FFFh
  ON-ON-OFF: D6000h to D6FFFh
  OFF-OFF-ON: D 8000 h to D 8 FFF h
  ON-OFF-ON: DA000h to DAFFFh
  OFF-ON-ON: DC000h to DCFFFh (factory setting)
  ON-ON-ON: DE000 to DEFFFh
  ※ Due to the ROM address, simultaneous use of this board, EMS and sound functions is not possible.
  　Also, when using with PC-9801 E / F / M, set D4000h to D4FFFh.
4-5: Setting ROM address in high resolution mode
  OFF-OFF: XE8000h to XE8FFFh
  ON-OFF: XEA000h to XEAFFFh
  OFF-ON: XEC000h to XECFFFh (factory setting)
  ON-ON: XEE000h to XEEFFFh
  * "X" stands for "0H" or "FH".
6-7: Setting of machine model
  ON-OFF: CPU is the model of 8086 or V30
  ON-ON: Model with only 286 CPUs in normal mode only (default setting)
  OFF-OFF: PC-98XA (high res dedicated model)
  OFF-ON: Model with both normal mode and high resolution mode, high resolution board
          Installed model
8: Enable / Disable of SCSI_BIOS
  ON: SCSI_BIOS enabled (factory setting)
  OFF: SCSI_BIOS disabled

・ 4 series jumper switch JB1: Setting of hold request channel
  HRQ1, HLA1 = short, HRQ2, HLA2 = open: HRQ / HLA channel 1
  HRQ1, HLA1 = open, HRQ2, HLA2 = short: HRQ / HLA channel 2 (factory setting)

· Triple jumper switch JB3: Transfer method, I / O page address setting
TM0D: Transfer method setting
  Open: Automatically switch DMA / bus master transfer depending on CPU type (factory setting)
  Short: Forced DMA transfer
　　※ It is used in advanced mode with Epson PC (when used in normal mode
　　　DMA transfer).When using OS / 2, bus master mode is canceled automatically.
IOA0-IOA1: I / O page address setting
  Short-short: CC0H
  Open-Short: CD0H
  Short-open: CE0H
  Open-Open: CF0H