Difference between revisions of "DEC bootstrap device codes"

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| DT || [[TC11 DECtape controller|TC11]] || [[TU55 DECtape Transport|TU55]]/[[TU56 DECtape Transport|TU56]] || [[DECtape]]
 
| DT || [[TC11 DECtape controller|TC11]] || [[TU55 DECtape Transport|TU55]]/[[TU56 DECtape Transport|TU56]] || [[DECtape]]
 
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| DU || Various || [[RD51]]/[[RX50]]/[[RC25]]<br>[[RA80]]/[[RA81 disk drive|RA81]] || Fixed disk
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| DU || Various || [[RD51]]/[[RD52]]/[[RD53 disk drive|RD53]]/[[RD54]],[[RX50]]/[[RC25]]<br>[[RA80]]/[[RA81 disk drive|RA81]]/[[RA82 disk drive|RA82]] || Fixed disk
 
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| DX || [[RX11 floppy disk controller|RX11]] || [[RX01/02 floppy drive|RX01]] || Low-density [[floppy drive]]
 
| DX || [[RX11 floppy disk controller|RX11]] || [[RX01/02 floppy drive|RX01]] || Low-density [[floppy drive]]
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[[Category: PDP-11s]]
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[[Category: PDP-11 Software]]

Latest revision as of 18:53, 16 November 2023

DEC bootstrap ROMs for the PDP-11s, from the M9301 ROM on, allowed use of a symbolic device name to specify a device to boot from, when using the console emulator function.

These codes included (not all were supported by all ROMs):

Code Controller Device Description
CR CR11 CR11 Card Reader Punched cards
CT TA11 TU60 Casette magnetic tape
DB RH11/RH70 RP04/RP05/RP06
RM02/RM03
Removable cartridge disk
DD DL11 TU58 DECtape II
DK RK11 RK02/03/RK05 Removable cartridge disk
DL RL11 RL01/RL02 Removable cartridge disk
DM RK611 RK06/RK07 Removable cartridge disk
DP RP11 RP02/RP03 Removable cartridge disk
DS RH11/RH70 RS03/04 Fixed-head disk
DT TC11 TU55/TU56 DECtape
DU Various RD51/RD52/RD53/RD54,RX50/RC25
RA80/RA81/RA82
Fixed disk
DX RX11 RX01 Low-density floppy drive
DY RX211 RX02 High-density floppy drive
MM TM02 TU16/TE16 Magnetic tape
MS TS11/TU80K TS04/TU80 Magnetic tape
MT TM11 TU10/TS03 Magnetic tape
MU Various TU81/TK50 Magnetic tape
PR PC11 PC05 High-speed paper tape
TT DL11 Various Serial line, low-speed paper tape, etc