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Chapter 4: Connecting the Emulator to a Target System
cf clk=int
cf rstcfg=int,auto
4 Map memory with the following command:
map 0..0fff eram
This maps a block of emulation memory starting at address 0 so that the reset
vectors will be accessed from this block.
5 Load a program with the following commands:
mo -ax -dl
m 0=0f00,100
mo -dw
m 100=60fe
This sets up reset vectors SSP=0f00 and PC=100. It then loads the most
simple program imaginable: jump to self.
6 Setup a trace to capture all MC6833x cycles, as follows:
tck -u
tg any
tsto any
tp c
t
7 Execute r rst.
This tells the emulator to deassert reset so that the emulator does not interfere
with the target system powerup reset.
8 Power on the target system.
9 Verify correct operation.
The prompt should be "U>". If you examine the trace, the program should be
looping at address 100.
If the target system appears to work properly, go ahead to the paragraph titled
"Installing a Monitor". If you suspect problems, return to "Verifying System
Operation" in the previous paragraphs. Keep in mind that the emulator must
receive strobes from the target system for emulation memory accesses to complete.
Plugging The Emulator Into A Target System
73
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