P/N 93F2637 (74F5122A???)

S1 Switches
 1  2  3  4  5  6    7  8    9     10  11      12        OFF (Up)
 ROM Base Address    IRQ    I/O  Shared RAM   Data Rate  ON (Down)
 

ROM Base Address 
 1   2  3   4   5   6  Setting
OFF ON ON  OFF OFF ON X'CC000'
OFF ON OFF OFF OFF ON X'DC000'

   The settings above are typical. However, you may set other ROM Base Address values. The ROM Base Address is defined as follows:

          ROM Base Address: b'1S1S2S3 S4S5S60 0000 0000 0000'

  Where S1 corresponds to switch 1, S2 corresponds to switch 2, and so on. OFF = b'1', ON = b'0'.

Interrupt Level
7     8    Setting
ON    ON   IRQ 2(9)
ON    OFF  IRQ 3
OFF   ON   IRQ 6
OFF   OFF  IRQ 7

I/O Base
9     Setting
OFF   X'0A20' / Primary
ON    X'0A24' / Alternate

Shared RAM Size
10    11   Setting
ON    ON    8 KB
OFF   ON   16 KB
ON    OFF  32 KB
OFF   OFF  64 KB

Data Rate
12   Setting
OFF  16 Mbps
ON    4 Mbps