HP 9845B/C CE Handbook page 79

9845B/C Peripherals
7·5
3. 98770A Color CRT.
d. 9845C Option 2XX. This option requires:
(9845BiC-10A).
1. Enhanced Graphics ROM 98780-65501 and mainframe ROM pair 1818-1591
and 1818-1592.
2. Alpha Control A34 (98770-66534).
3. 98770A Color CRT.
e. 9845B Option 1XX with 98403A Fast Processor Upgrade Kit. This option requires:
(9845B/C-1
OA).
1. Graphics ROM 09845-65517 and mainframe ROM pair 1818-0835 and 1818-
0831.
2. Left Support A3 (09845-66503).
3. Graphics Scanner A77 (09845-66577).
4. Graphics Memory A79 (09845-66579).
6. Assembly Development and Executing ROM.
This ROM requires a PPU processor board with an AEC chip manufactured after July
1979 (9845B/C-10).
7. DBM ROM. Use of this ROM requires the following configuration:
a. Revision C or later 10 ROM (PPU side)
(9845B/C-10).
b. Revision D or later Block 5 Address 40K ROM pair
(9845B/C-5).
c. Revision B or later Mass Storage ROM for all mass storage devices except 9895,
which requires Revision C or later (9845-10).
d. If the mass storage device is a 9885, then the following is required:
1. 98032A must have correct one shot timing
(9845B/C-8).
2. 9885M/S
must have A4 board changes per 9885M/S-4A and -5A.
I