LeCroy 8901A Operator's Manual page 10

Product Description
Transfer Mode
Addressing the 8901A and presenting a transfer byte determines
the data transfer mode carried out with the subsequent execute
(Talk) command (Table 2).
Table 2 - Transfer Mode Commands
Normal
Transfer
Block
Read
High Speed
Block Read
8-bit read 97
16-bit read 98
24-bit read 100
121 (79) 105 (69)
122 (7A) 106 (6A)
124 (70) 108 (60)
Single byte commands - values specified in decimal
with hex value given in ()
Common CAMAC
Commands
Addressing the 8901A and presenting it with the following byte
determines a command which will be executed with the next
Talk command (Table 3).
Table 3 - CAMAC Commands
Send initialize (Z)
Send clear (C)
Send clear and initialize
Assert inhibit (I)
Deassert inhibit (also disables SRQ's)
Single byte commands - values specified in decimal
with hex value given in ()
Execute
Addressing the 890lA and presenting a TALK command exe
cutes the previously presented CAMAC command.