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2 KC 85/4 Z80-based computer, OS main loop trace
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5 This is a set of example captures of the Z80 CPU operation of the KC 85/4
6 by VEB Mikroelektronik Wilhelm-Pieck Mühlhausen.
8 Details: http://www.mpm-kc85.de/
14 The logic analyzer used was a SysClk LWLA 1034:
35 Contains two samples, one captured asynchronously at 20 MHz, and another
36 captured synchronously on the falling edge of the Z80 CPU clock.
38 The sigrok command lines used were:
40 sigrok-cli -d sysclk-lwla \
42 -p CH1=CLK,CH2=/M1,CH3=/INT,CH4=MEI,CH5=/WAIT,CH6=IEI,\
43 CH7=A0,CH8=A1,CH9=A2,CH10=A3,CH11=A4,CH12=A5,CH13=A6,CH14=A7,\
44 CH15=A8,CH16=A9,CH17=A10,CH18=A11,CH19=A12,CH20=A13,CH21=A14,CH22=A15,\
45 CH23=/IORQ,CH24=/MREQ,CH25=/RD,CH26=/WR,\
46 CH27=D0,CH28=D1,CH29=D2,CH30=D3,CH31=D4,CH32=D5,CH33=D6,CH34=D7 \
47 -o kc85-20mhz.sr --samples 5000
49 sigrok-cli -d sysclk-lwla \
50 -c samplerate=1M:external_clock=true:clock_edge=f \
51 -p CH1=CLK,CH2=/M1,CH3=/INT,CH4=MEI,CH5=/WAIT,CH6=IEI,\
52 CH7=A0,CH8=A1,CH9=A2,CH10=A3,CH11=A4,CH12=A5,CH13=A6,CH14=A7,\
53 CH15=A8,CH16=A9,CH17=A10,CH18=A11,CH19=A12,CH20=A13,CH21=A14,CH22=A15,\
54 CH23=/IORQ,CH24=/MREQ,CH25=/RD,CH26=/WR,\
55 CH27=D0,CH28=D1,CH29=D2,CH30=D3,CH31=D4,CH32=D5,CH33=D6,CH34=D7 \
56 -o kc85-cpuclk.sr --samples 5000