ROM Backups - Nakazoto/CenturionComputer GitHub Wiki
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.
Board | Location | Usage | IC | Link |
---|---|---|---|---|
DIAG | F1 | Diagnostic and TOS | MM2716 | Link |
DIAG | F2 | Auxiliary Tests | MM2716 | Link |
DIAG | F3 | Auxiliary Tests | MM2716 | Link |
DIAG | F4 | Auxiliary Tests | MM2716 | Link |