Mcu Option Field Code Definitions - HP 3000 III Series Manual

~ystem
Microcode
5-8. MCU Option Field Code Definitions (Continued)
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1 1
Fie ld
I
1
Label and Name
I
Code
1
Descr ipt ion
1 .__------- 1 . _ _--
I_~.
- . _ _.__- . _
ROND
10011 Same as RND, except that the re-
turned data is stored in both the
NIR and the OPND Register.
RONP 01011 Same as RNP, except that the re-
turned data is stored in both the
NIR and the OPND Register.
1
I
RONS
11011
Same as RNS, except that the re- I
tur ned da ta is stored in both the
1
NIR and the OPND Register. I
I
ROP
01111
Same as RNP, except that the re- I
returned data is stored in the OPND
Register.
ROS
11111
Same as RNS, except that the re-
turned data is stored in the OPND
Register.
S
WRA
WRD
11000
00110
10110
Same as ASS, except that the Stack-
Bank Register is specified and is
used with DB-,
Q-,
or S-relati ve
addressing.
The MeU option code WRA enables the
Store field bus options (as in CRL)
to store the U-Bus in ACOR and to
initiate a low-request command. The
ABS-Bank Register generates the
module number used to initiate a
data store into memory. On the sel-
ect cycle, the addressed memory
module interprets the MCU-Bus data
as an address and goes busy. The
module stays busy until it receives
the data to be stored (normally
sent on the following cycle with a
microcode BUS DATA instr uct ion) and
completes the write cycle, or until
its timer runs down.
Sarne as WRA, exce pt tha t the DB- .
Bank Register generates the module
numbe r.
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