M9312 PROM Files

The following files are source, listing, and object images in Intel HEX format for the DEC PDP-11 M9312 Bootstrap module (and other compatible sockets such as the 11/44 UBI).

All source files are a faithful representation of the contents of the respective PROM.

Two additional images have been added that are non-standard:

23-765B9 - (yes I know ...B9 is not actually correct per DEC nomenclature) is a rewrite of the standard DD TU58 boot PROM. The standard DEC PROM is completely broken when it comes to supporting a non-standard CSR address other than 776500. 23-765B9 fixes this issue.
23-ZZZA9 - fits in an M9312 boot PROM socket, but is not a boot PROM per se. When started, it runs the M9312 diagnostics forever, checking both the CPU and the low 28K of memory using the standard console PROM diagnostic tests (see the 23-248F1 listing). It has proven to be very useful when debugging old PDP-11s when not enough works to boot diagnostics from a disk/tape (or you don't yet actually have a disk or tape).

An image of the TMSCP boot device 23-E39A9 has been found! Thanks to Jack Rubin for sending me a real device to read (21-Feb-2020).

Images of the DEUNA/DELUA netboot devices 23-E32A9/E33A9 have been found! Actual devices have been read (24-Feb-2020).

The tools to assemble/build a PROM image are available in tools.tar.gz. Refer to the included README.txt file for further information on usage.

Questions or comments email Don North <ak6dn _at_ arrl _dot_ net>

DEC Module & Location	PROM Type	Function	DEC P/N & HEX File	Device Checksum	Source & Listing	Notes
M9312 Console	82S137 Am27S32 74S573 (1024x4-TS)	11/04,34 Diagnostic/Console (M9312 E20)	23-248F1	0x1983	SRC LST	(1,3)
		11/60,70 Diagnostic/Console (M9312 E20)	23-616F1	0x1666	SRC LST	(1,3)
		11/44 Diagnostic/Console (UBI; M7098 E58)	23-446F1	0x1978	SRC LST	(1)
		11/24 Diagnostic/Console (MEM; M7134 E74)	23-774F1	0x1A2E	SRC LST	(1)
M9312 Boot 11/44 UBI 11/24 MEM	82S131 Am27S13 63S241 74S571 (512x4-TS) & 82S129 (256x4-TS)	(DL) RL01/02 cartridge disk	23-751A9	0x0698	SRC LST	(1,2)
		(DM) RK06/07 cartridge disk	23-752A9	0x0627	SRC LST	(1,2)
		(DX) RX01 floppy disk, single density	23-753A9	0x066D	SRC LST	(2)
		(DP) RP02/03 cartridge disk (DB) RP04/05/06,RM02/03/05 cartridge disk	23-755A9	0x0622	SRC LST	(1,2)
		(DK) RK03/05 DECdisk (DT) TU55/56 DECtape	23-756A9	0x0613	SRC LST	(1,2)
		(MM) TU16/45/77,TE16 magtape	23-757A9	0x06F2	SRC LST	(1,2)
		(MT) TS03,TU10,TE10 magtape	23-758A9	0x06DC	SRC LST	(1,2)
		(DS) RS03/04 fixed disk	23-759A9	0x04BC	SRC LST	(2)
		(TT) ASR33 lowspeed reader (PR) PC05 hispeed reader	23-760A9	0x0681	SRC LST	(1,2)
		(CT) TU60 DECcassette	23-761A9	0x05E2	SRC LST	(2)
		(RS) RS11/64 fixed disk	23-762A9	-	-	(4)
		(CR) CR11 card reader	23-763A9	-	-	(4)
		(MS) TS04/11,TU80,TSU05 tape	23-764A9	0x06E1	SRC LST	(2)
		(DD) TU58 DECtapeII	23-765A9	0x0603	SRC LST	(2)
		(DD) TU58 DECtapeII; fixes non-std CSR access	23-765B9	0x05BC	SRC LST	(5)
		(DU) MSCP UDA50(RAxx) disk	23-767A9	0x0677	SRC LST	(1)
		(DY) RX02 floppy disk, double density	23-811A9	0x0646	SRC LST	(1,2)
		(MU) TMSCP TK50,TU81 magtape	23-E39A9	0x0705	SRC LST	(1)
		(XE) Ethernet DEUNA/DELUA Net Boot (v1)	23-E22A9	-	-	(4)
		(XE) Ethernet DEUNA/DELUA Net Boot (v2)	23-E32A9	0x05D6	SRC LST	(1)
		(XE) Ethernet DEUNA/DELUA Net Boot (v2)	23-E33A9	0x0755	SRC LST	(1)
		(XM) DECnet DDCMP DMC11/DMR11	23-862A9	0x0625	SRC LST	(1,2)
			23-863A9	0x063F	SRC LST
			23-864A9	0x0551	SRC LST
		(XU) DECnet DDCMP DU11	23-865A9 23-866A9 23-867A9	-	-	(4)
		(XW) DECnet DDCMP DUP11	23-868A9 23-869A9 23-870A9	-	-	(4)
		(XL) DECnet DDCMP DL11-E	23-926A9 23-927A9 23-928A9	-	-	(4)
		(ZZ) Test ROM; runs diagnostics continuously	23-ZZZA9	0x05FE	SRC LST	(5)

  Notes:  (1) verified against a physical device
          (2) verified against DEC document K-SP-M9312-0-7 (rev A11 Aug78)
          (3) verified against DEC document K-SP-M9312-0-5 (rev B1 Aug78)
          (4) no device or file available
          (5) newly written code

Last updated: 2020-02-24 07:30pm PST

By: ak6dn _at_ arrl _dot_ net