Mostek z80 - Page 49

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2. The second option is the tr igger strobe. The tr igger strobe may be
updated by .entering one of the following numbers corresponging to the
desired trigger strobe. The leading or trailing edge of the trigger strobe
signal may be selected by entering a comma followed by a second digit
corresponding to the desired edge. If no edge is specified the leading edge
is selected.
" - I'llEMORY READ
1 - MEMORY WRITE
2 - MEMORY READ OR WRITE
3 - PORT READ
4 - PORT WRITE
5 - PORT READ OR WRITE
6 - INTERUPT ACKNOWLECGE
7 - PROBE AS
x,8 - LEADING EDGE OF ABOVE SIGNAL
x,9 - TRAILING EDGE OF ABOVE SIGNAL
3. The third option is the EVENT COUNT. The EVENT COUNT may be specified
by entering a Hexadecimal number (up to four digits if strapped for sixteen
bits or two digits if strapped for eight bits). The EVENT COUNT is the
number of occurances of the trigger 1NOrd which £.lust occur before the
breakpoint sequence is initiated. The EVENT COUNT is initialized to "1"
when the AIMZ80 is loaded.
4. '!he forth option is the DELAY COUNT. The DELAY COUNT may be specified
by entering a Hexadecimal number up to three digits for the ten bit counter.
The DELAY COUNT is the number of history clock cycles the system is allowed
to execute after the EVENT COUNT is satisfied and before the hardware
breakpoint actually occurs.