User`s manual

Menu Item Descriptions
SBCSCSI/D1 E-5
E
Allocate New Control Structure Set
Several structures are used to pass parameters to the SDL and SIOP Firmware.
One set of structures is provided when t167 runs. Additional control structure
sets may be allocated by selecting this item. The maximum number of sets,
currently 16, is defined by MAX_CS in the file t167.h.
Allocate New Data Buffer
One buffer area for data transfer operations is provided by t167. Selection of
this item permits a user to allocate additional data buffers. Data buffers are
referenced by sequentially assigned numbers. When a new buffer is allocated,
the user is prompted for the length of the buffer in bytes. The user may also
specify an absolute starting address; however, this results in system faults
when t167 is running under a host operating system, and can result in any
number of errors during stand-alone operation unless extreme care is taken.
Once allocated, buffers cannot be deallocated. The maximum number of data
buffers, currently 16, is defined by MAX_DB in the file t167.h.
Display/Alter Data Buffer Parameters
The base address and length of each allocated data buffer are displayed, as
shown in the example below. The base address and length cannot be changed
(even though the menu item says "alter"). Example display:
Item Name Description
1 newcs Allocate New Control Structure Set
2 newdb Allocate New Data Buffer
3 dbp Display/Alter Data Buffer
Parameters
4 addr SDL and NCR Firmware Addresses
5 term Select Terminal Type
h help Display this menu
s status Status of previous command
q quit Return to previous menu
x exit Exit from t167
Buffer First Address End Address Length
0 0x4080f4 4084f3 1024, (0x400)
1 0x4180f8 41ac07 11024, (0x2b10)