Visara SCON-20L Configuration Manual - Manual (Page 105)

707044-006 10-5
Chapter 10. Feature Memory Allocation
For each device attached to LINCS, 8K of screen image memory and 1K of session
information memory is allocated from base system memory. This allows devices to
have a single session (and in some cases limited MLS) without requiring feature memory.
When a device PORs, the amount of PS Storage memory to allocate is determined
based upon the Device Profile. The Device Profile indicates the number of sessions and
whether or not windowing and calculator memory will be required. If Presentation
Space memory is not available for all sessions, the Device will POR with as many
sessions as available PS Storage memory will allow. A device will always be able to
POR with at least one session (session A). If memory is not available to POR all sessions,
a 285 error will be posted on the device's status line to indicate that some sessions are
unavailable.
The following table lists the Presentation Space Memory memory requirements
for MLS.
NUMBER OF HOST SESSIONS
D O M
E Z I S
B A E 1 2 3 4 5 6 7 8 9 0 1
R E B M U N
S Y A L P S I D
S L M
Y R O M E M
D E R I U Q E R
L A T O T
) 0 8 X 4 2 ( 2 O N 0 1 2 3 6 9 2 1 5 1 8 1 1 2 _ _ _ _ _
*
_ _ _ _ _ _ _ _ _ _ =
) 0 8 x 2 3 ( 3 O N
) 0 8 x 3 4 ( 4 O N 0 1 6 1 1 6 1 1 2 6 2 1 3 6 3 1 4 _ _ _ _ _ * _ _ _ _ _ _ _ _ _ _ =
) 2 3 1 x 7 2 ( 5 O N
) 0 8 X 4 2 ( 2 S E Y 0 1 6 1 1 6 1 1 2 6 2 1 3 6 3 1 4 _ _ _ _ _ * _ _ _ _ _ _ _ _ _ _ =
) 0 8 x 2 3 ( 3 S E Y
) 0 8 x 3 4 ( 4 S E Y 0 9 8 1 7 2 6 3 5 4 4 5 3 6 2 7 1 8 _ _ _ _ _ * _ _ _ _ _ _ _ _ _ _ =
) 2 3 1 x 7 2 ( 5 S E Y
E S A B K 4 > S E Y 8 5 2 2 4 9 5 6 7 3 9 0 1 1 7 2 1 4 4 1 1 6 1 _ _ _ _ _ * _ _ _ _ _ _ _ _ _ _ =
L A T O T Y R O M E M _ _ _ _ _ =
To determine the amount of memory to allocate for MLS, count the number of displays
matching the description in a given row from the table. Enter this in the NUMBER
DISPLAYS column. Determine the average number of sessions configured on displays
of this type. Take the amount of memory required for that number of sessions and
enter it in the MEMORY REQUIRED column. Multiply the number of displays times
the memory required to get the total memory required for a given display type. Add
up the memory required for all types of displays and enter it in the Total MLS Memory
Field. This determines the total amount of memory for MLS.