Section IV. ROM PROGRAMMING

TM 11-5865-215-13

Section IV.

ROM PROGRAMMING

General.

This section contains instructions for programming the ROM CCAs of

the receiver control. Programming is accomplished with the use of

Programmer-Simulator MX-9854/U (ROM programmer). Detailed operating

instructions for the ROM programmer are contained in

TM 11-6625-2896-13.

ROM Programming Procedures.

The programmer memory CCA of the receiver control (CCA A4) can be

programmed with either a master ROM CCA or a paper tape (1966-1-1402-1).

The procedures for both methods are detailed in the paragraphs below.

Procedures for verifying and erasing a ROM are also provided.

a. Paper Tape Loading Procedure.

To load paper tape data into

the ROM programmer's internal RAM, proceed as follows:

(1) Make sure ROM POWER switch is off.

(2) Set POWER ON switch to on ( switch, lights) .

(3) Place paper tape in tape reader.

(4) Set switches on the ROM programmer front panel in the fol-

lowing sequence:

(a)

Set MODE SELECT ROM/RAM switch to RAM.

(b) Set MODE SELECT thumbwheel to 0 (LOAD) .

(d) Set MEM. PROTECT/NORM/DEPOSIT switch to NORM.

(5) Press RUN/HALT! switch to RUN.

NOTE

After the RUN/HALT switch is pressed up (RUN), the

tape should automatically load tape data into the

RAM.

(6) Set MEM. PROTECT/NORM/DEPOSIT switch to MEM. PROTECT after

tape stops.

b. Master ROM-to-RAM Loading Procedure. To load data from a

master ROM CCA into the internal RAM, proceed as follows: