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Phase #1

NE555 functions:

Variable ( 1Hz to 10KHz )
Symmetry

Phase #2

Microprocessor functions:

Address Lines Changing?
Data Buss LED's Activity?
"Dot Clock" Display?
Status Display Activity?

Phase #3

EEPROM functions (with NOP's in ROM):

Status Display?
Timing/EEPROM active ?
Addr Lines responding correctly?
Data Lines responding correctly?

Phase #4          ( LDA, STA, IN, OUT, JMP Commands )

EEPROM, SRAM, and I/O Devices:

Memory Access (Read & Write)
Data Input (observe by "Data")
Data Output
(Observe by "Data" & "I/O" LED's)

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MicroLab.sam - Z80_Lab - SfE-DCS, ddf - 12/11/2001