Hardware Reference
In-Depth Information
Figure 3.13 Corrected source code for the printer test program (ptest.com)
Warm reboot
The following script file can be used with Debug to generate a program
(WARM.COM). This program directs the program counter to the start of ROM
BIOS but avoids the power-on memory check routine.
Assuming that the script file is to be produced by means of the DOS COPY
command, the following keyboard entries will be required:
COPY CON WARM.DBG
A
XOR AX,AX
MOV ES,AX
MOV DI,0472
MOV AX,1234
STOSW
JMP FFFF:0000
NWARM.COM
RCX
10
W
Q
ˆZ
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