Specifications

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Using the Ampro SSD software, the byte-wide sockets can serve as individual SSD drives, or

they can be combined into one larger drive. SSD drives can be used along with normal (floppy

and hard disk) drives. Ampro's SSD Expansion Board provides additional SSD sockets.

Byte-Wide Socket Configuration

If the byte-wide memory sockets are used, they must be configured by means of jumpers for the

device type in use. W12 and W13 are associated with U32, while W20 and W21 are associated

with U33.

The supported memory devices and corresponding jumper settings are shown in Table 2-7. Note

that W13 and W21 each consist of six jumper pins, numbered "1" through "6", as shown in

Figure 2-3.

Table 2-7. U32 and U33 Device Jumpering

U32 U33

SIZE DEVICE TYPE P/N

W12 W13 W20 W21

8K Normal EPROM 2764 1/2 1/2 1/2 1/2

16K Normal EPROM 27128 1/2 1/2 1/2 1/2

32K Normal EPROM 27256 1/2 5/6 1/2 5/6

128K Page-addr EPROM 27011 1/2 3/4 1/2 3/4

32K 28-pin SRAM 62256 2/3 3/4 2/3 3/4

32K 28-pin NOVRAM DS1235x 2/3 3/4 2/3 3/4

32K

512K

NOVRAM Cartridge DS1217x 2/3 3/4 2/3 3/4

The required access time for devices plugged into U32 and U33 is 300 nS or faster.

1 2 3

W12

W13

1 3 5

1 2 3

W20

W21

1 3 5

Figure 2-3. Byte-Wide Socket Jumpering

In addition to having its device configuration jumpers set, each socket must be enabled or

disabled via a parameter within the board's nonvolatile Configuration Memory. The Ampro

SETUP utility offers a convenient means to do this. SETUP resides in the ROM-BIOS and can

be accessed either with a "hot-key" entry (CTRL-ALT-ESC) or through the SETUP program

provided on the Little Board/286 Utilities diskette.

U32

U33