ROM Backups

This is a collection of all the ROMs that have been pulled from the computer and had their data backed up.

CPU6

The CPU6 contains 8 ROMs in total that are all part of the microcode used to emulate the CPU4 Architecture.

Board	Location	Usage	IC	Link
CPU6	E3	Microcode	AM27S191	Link
CPU6	F3	Microcode	AM27S191	Link
CPU6	H3	Microcode	AM27S191	Link
CPU6	J3	Microcode	AM27S191	Link
CPU6	K3	Microcode	AM27S191	Link
CPU6	L3	Microcode	AM27S191	Link
CPU6	M3	Microcode	AM27S191	Link
CPU6	B13	Microcode	6309	Link

CMD

The CMD board contains 11 ROMs in total that make up the microcode for interfacing with the CDC Phoenix Drive. It should be noted that these ROM files look very suspect. It is highly likely that some or all of the ROM files are bad or corrupt in some way.

Board	Location	Usage	IC	Link
CMD	A7	Microcode	TBP18S030	Link
CMD	B3	Microcode	TBP28S86AN	Link
CMD	C3	Microcode	TBP28S86AN	Link
CMD	D3	Microcode	TBP28S86AN	Link
CMD	DC3	Microcode	TBP28S86AN	Link
CMD	E3	Microcode	TBP28S86AN	Link
CMD	ED3	Microcode	TBP28S86AN	Link
CMD	F3	Microcode	TBP28S86AN	Link
CMD	HF3	Microcode	TBP28S86AN	Link
CMD	F12	Microcode	6309	Link
CMD	H15	Microcode	TBP18S030	Link

FFC

The FFC board contains 12 ROMs in total, 9 on the primary board, and 3 on the secondary board. There was a lot of water damage around the H6, H7 and H8 area on the board, and the ROMs were in rough shape. Getting clean reads was spotty at best, but I believe that the data shown here is all correct. With the exception of ROM A3. It did not have any water damage, but refused to put out any meaningful data.

Board	Location	Usage	IC	Link
FFC	H1	Microcode	82S181	Link
FFC	H2	Microcode	82S181	Link
FFC	H3	Microcode	82S181	Link
FFC	H4	Microcode	TBP28S86AN	Link
FFC	H5	Microcode	82S181	Link
FFC	H6	Microcode	82S181	Link
FFC	H7	Microcode	82S181	Link
FFC	H8	Microcode	82S181	Link
FFC	A3	Microcode/Logic?	TBP18S030	Link
FFC	A4	Microcode/Logic?	TBP28L22	Link
FFC	B3	Microcode/Logic?	TBP18S030	Link
FFC	J7	Microcode/Logic?	TBP18S030	Link

DSK / AUT

The only ROM on the DSK/AUT board is the MM1702 Ceramic EPROM in the center of the board that contains the bootstrap code for CPU4 systems. The DSK/AUT and DSKII board work in tandem to interface with the CDC Hawk Drive.

Board	Location	Usage	IC	Link
DSK/AUT	E4	Bootstrap	MM1702	Link

Backplane

The only ROM on the backplane is the TBP18S42 (or 6349) mask ROM that contains the bootstrap code for CPU5 and CPU6 systems.

Board	Location	Usage	IC	Link
BPN	N/A	Bootstrap	TBP18S42 (6349)	Link

DIAG

The DIAG board has four ROMs that hold the code for the diagnostic tests as well as the Test Operating System (TOS). ROM F1 contains all the standard tests that show through the hex displays as well as TOS. ROMs F2, F3 and F4 contain all the Auxiliary Tests (0D) that are run through the terminal.