Difference between revisions of "RK11 disk controller"

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(Add RK11 bootstrap)
(Added disk-''n'' bootstrap)
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The '''RK11''' is the [[UNIBUS]] controller for the [[RK05]] moving-head magnetic disk drive.
 
The '''RK11''' is the [[UNIBUS]] controller for the [[RK05]] moving-head magnetic disk drive.
==PDP-11 bootstrap==
+
==PDP-11 bootstraps==
 +
 
 +
===Disk 0===
  
 
I know the octal data is correct, but I'm not sure about the mnemonics and the description.
 
I know the octal data is correct, but I'm not sure about the mnemonics and the description.
Line 19: Line 21:
 
|1012||000005||                        || (constant)
 
|1012||000005||                        || (constant)
 
|-
 
|-
|1014||105710||TSTB (r0)                ||Skip on Test the byte at 177404
+
|1014||105710||TSTB (r0)                ||Test byte at 177404
 
|-
 
|-
|1016||100376||JMP *-1                  ||Jump back one instruction
+
|1016||100376||JMP *-1                  ||Jump backward if positive
 
|-
 
|-
 
|1020||005007||CLR PC                  ||Jump to zero
 
|1020||005007||CLR PC                  ||Jump to zero
 
|}
 
|}
 +
 +
===Disk ''n''===
 +
 +
{| border=1
 +
! Address !! Data !! Mnemonic !! Description
 +
|-
 +
|1000||012700||MOV #177406, R0
 +
|-
 +
|1002||177406||(constant)
 +
|-
 +
|1004||012760||MOV xxxxxx, 000004(R0)
 +
|-
 +
|1006||xxxxxx||(disk ID number)
 +
|-
 +
|1010||000004||(index)
 +
|-
 +
|1012||012700||MOV #177406, R0
 +
|-
 +
|1014||177406||(constant)
 +
|-
 +
|1016||012710||MOV #177400, (R0)
 +
|-
 +
|1020||177400||(constant)
 +
|-
 +
|1022||012740||MOV #000005, -(R0)
 +
|-
 +
|1024||000005||(constant)
 +
|-
 +
|1026||105710||TSTB (R0)
 +
|-
 +
|1030||100376||BPL *-1
 +
|-
 +
|1032||005007||CLR PC
 +
|}
 +
 +
 
[[Category:UNIBUS storage controllers]]
 
[[Category:UNIBUS storage controllers]]
 
[[Category:DEC storage controllers]]
 
[[Category:DEC storage controllers]]

Revision as of 01:24, 17 May 2007

The RK11 is the UNIBUS controller for the RK05 moving-head magnetic disk drive.

PDP-11 bootstraps

Disk 0

I know the octal data is correct, but I'm not sure about the mnemonics and the description.

Address Data Mnemonic Description
1000 012700 MOV #177406,r0 Move the top of the address of the controller into r0
1002 177406 (constant)
1004 012710 MOV #177400,(r0) Move 177400 into 177406
1006 177400 (constant)
1010 012740 MOV #000005,-(r0) Move 5 into 177404
1012 000005 (constant)
1014 105710 TSTB (r0) Test byte at 177404
1016 100376 JMP *-1 Jump backward if positive
1020 005007 CLR PC Jump to zero

Disk n

Address Data Mnemonic Description
1000 012700 MOV #177406, R0
1002 177406 (constant)
1004 012760 MOV xxxxxx, 000004(R0)
1006 xxxxxx (disk ID number)
1010 000004 (index)
1012 012700 MOV #177406, R0
1014 177406 (constant)
1016 012710 MOV #177400, (R0)
1020 177400 (constant)
1022 012740 MOV #000005, -(R0)
1024 000005 (constant)
1026 105710 TSTB (R0)
1030 100376 BPL *-1
1032 005007 CLR PC