CARD240, CARD350 (R & D)

C bus on board HDD. The CARD 240 has a capacity of 251.9 MB, and the CARD 350 has a 362.8 MB.
The mounted HDD is a special product, so replacement with a general drive is not possible.
There is no external terminal.High res mode not supported.
SASI / SCSI / IDE in PC to emulate SASI or SCSI
Can coexist even if any HDD is connected (SCSI HDD connected to the main unit
SASI compatible mode, SASI / IDE HDD is connected if it is
In case of use in SCSI compatible mode).Also with the SCSI-PLUS function
Additional connection is possible even if both SCSI and SASI HDDs are connected.
　Average seek time: 17 ms
　Data buffer size: 128 kB
　Current consumption: 1.5 A at startup, 0.8 A at operating average
　Temperature condition: 10 to 35 °
　Humidity condition: 20 to 80% (without condensation)
　Supported OS: MS-DOS ver. 3.3C / C, 5.0 / A / AH, MS-Windows 3.0 / 3.1
　Supported devices: PC-98 series and Epson made with CPU of V30 or more
　　　　　　98 compatible machine
There are two 8-deep dip switches on the board.

・ 8 stations dip switch SW1: interrupt level, operation mode, I / O port
　Address, SCSI ID setting
1-2: interrupt level setting
　ON-ON: INT 0
　OFF-ON: INT 1
　ON-OFF: INT 2
　OFF-OFF: INT 3 (default setting)
3: Setting of operation mode (SASI / SCSI compatible)
　ON: SCSI compatible
　OFF: SASI compatible (factory setting)
4-5-6-7-8: I / O port address setting (8 also serves as SCSI ID setting)
(1) When SCSI ID = 0
　OFF-OFF-OFF-OFF-OFF: CED0h to CFDFh (factory setting)
　ON-OFF-OFF-OFF-OFF: CCD 0h to CDDF h
　OFF-ON-OFF-OFF-OFF: CAD0h to CBDFh
　ON-ON-OFF-OFF-OFF: C8D0h to C9DFh
　OFF-OFF-ON-OFF-OFF: C6D0h to C7DFh
　ON-OFF-ON-OFF-OFF: C4D0h to C5DFh
　OFF-ON-ON-OFF-OFF: C2D0h to C3DFh (Note 1)
　ON-ON-ON-OFF-OFF: C0D0h to C1DFh
　OFF-OFF-OFF-ON-OFF: 8ED0h-8FDFh
　ON-OFF-OFF-ON-OFF: 8CD0h-8DDFh
　OFF-ON-OFF-ON-OFF: 8 AD 0 h to 8 BDF h
　ON-ON-OFF-ON-OFF: 88D0h to 89DFh
　OFF-OFF-ON-ON-OFF: 86D0h to 87DFh
　ON-OFF-ON-ON-OFF: 84D0h to 85DFh
　OFF-ON-ON-ON-OFF: 82D0h to 83DFh
　ON-ON-ON-ON-OFF: 80D0h to 81DFh
(2) In the case of SCSI ID = 4
　OFF-OFF-OFF-OFF-ON: 4ED0h to 4FDFh
　ON-OFF-OFF-OFF-ON: 4CD0h to 4DDFh
　OFF-ON-OFF-OFF-ON: 4AD0h to 4BDFh
　ON-ON-OFF-OFF-ON: 48D0h to 49DFh
　OFF-OFF-ON-OFF-ON: 46D0h to 47DFh
　ON-OFF-ON-OFF-ON: 44D0h to 45DFh
　OFF-ON-ON-OFF-ON: 42D0h to 43DFh (Note 2)
　ON-ON-ON-OFF-ON: 40D0h to 41DFh
　OFF-OFF-OFF-ON-ON: 0ED0h to 0FDFh
　ON-OFF-OFF-ON-ON: 0CD0h to 0DDFh
　OFF-ON-OFF-ON-ON: 0 AD 0 h to 0 BDF h
　ON-ON-OFF-ON-ON: 08D0h to 09DFh
　OFF-OFF-ON-ON-ON: 06D0h to 07DFh
　ON-OFF-ON-ON-ON: 04D0h to 05DFh
　OFF-ON-ON-ON-ON: 02D0h to 03DFh
　ON-ON-ON-ON-ON: Setting prohibited
Note 1: The instruction says C2D0h to C2DFh and 42D0h to 42DFh,
C2D0h to C3DFh and 42D0h to 43DFh, respectively
Seem.

· 8 stations dip switch SW2: access display, transfer mode, ROM
　Address setting
1: Access display setting
　When accessing the HDD with MS-DOS, access in red in the lower right of the screen
　Display.This display does not appear on Windows (Access on Windows
　Prohibit display).
　ON: Access lamp lights (factory setting)
　OFF: Access lamp released
2: Transfer mode setting
　Set it to OFF when using it with NEC PC-98 mounted with 80286.
　ON: Block transfer mode (factory setting)
　OFF: Program transfer mode
3-4-5-6-7-8: ROM address setting
　ON-ON-ON-ON-OFF-ON: D0000h
　OFF-ON-ON-ON-OFF-ON: D1000h
　ON-OFF-ON-ON-OFF-ON: D2000h
　OFF-OFF-ON-ON-OFF-ON: D3000h
　ON-ON-OFF-ON-OFF-ON: D4000h *
　OFF-ON-OFF-ON-OFF-ON: D5000h *
　ON-OFF-OFF-ON-OFF-ON: D6000h *
　OFF-OFF-OFF-ON-OFF-ON: D7000h *
　ON-ON-ON-OFF-OFF-ON: D8000h * (default setting)
　OFF-ON-ON-OFF-OFF-ON: D 9000h *
　ON-OFF-ON-OFF-OFF-ON: DA000h
　OFF-OFF-ON-OFF-OFF-ON: DB 000 h
　ON-ON-OFF-OFF-OFF-ON: DC 000 h
　OFF-ON-OFF-OFF-OFF-ON: DD 000 h
　ON-OFF-OFF-OFF-OFF-ON: DE 000 h
　OFF-OFF-OFF-OFF-OFF-ON: DF000h
The default setting is D8000h to D8FFF.Also, * in SASI mode
Only setting is possible.Normally, it can be used with the factory settings.

※ About SCSI-PLUS function
By using the SCSI-PLUS function, this machine in SCSI compatible mode can be used with other SCSI HDDs.
Can coexist withHowever, this function is PC-9801-55 and complete
Only when using a compatible SCSI board.
→ In the normal mode, the ROM address in the SCSI mode is from DE000h to DEFFFh
/ DF000h to DEFFFh, and in high resolution mode, ROM address in SCSI mode
Setting to between EF000h and EFFFFh automatically enables the SCSI-PLUS function.
Note: As mentioned above, the beginning of the manual says that the high res mode is not supported.