Memory calculations 99
Note
4 : The size of the TI’Y blocks is calculated from:
For Releases 4 and 5:
141+
x (words),
where: x = 8 for CDR ‘ITYs; 128 otherwise.
For Releases 7 through 15:
t + x (words),
where:
t = 16 (size (ITYI@BLOCK) + 128 (TTY output buffer) = 144
and x = the following table
CDR link:
HS link:
APL link:
PMS Link:
other:
Input Buffer
128
128+
128+
20+
8
Data
15
(179 +
2
Output
Q
4)
I
1
---
Note
5 : The size of the Input/Output buffers is specified in “messages”.
Each message uses 4 words of unprotected data store. The recommended
size for I/O buffers is:
LPIB
(Low Priority Input Buffers)
HPIB
(High Priority Input Buffers)
= 96 messages
= M,
LE:16
messages
S, MS: 16 messages
N, VLE: 32 messages
XL:16 x # of groups
XN32
x # of groups
PBXOB (Non
SLl
Output Buffers)
BCSOB
(SLl
Output Buffers)
= 160 messages
= 160 messages
Memory calculations 553-2201-l 51 Appendix 1