MPU tester. André’s MPU 35 Boot tester is an advanced continuity tester to find faults in locked up bally MPU’s of type _35 and _17
André’s MPU 35 Boot tester is an advanced continuity tester to find faults in locked up bally MPU’s of type _35 and _17
It is made of commodity stuff like: resistors, dupont wires , arduino mega, and a “led and key” module which can be bought from various sources.
Functions of the tester:
• Do advanced continuity check of (including chip select) of : o The mc6800 socket o The two pia sockets o The mc6810 socket o The 5101 socket o The U2 eprom socket o The U6 eprom socket • Simple logic analyzer function to check the startup via a (time and state with mnemonics ). Sampling rates between 100ns and 300ns.
• See status of reset.
• Test correct operation of and clock generation ϕ2
• Test ram chips U7(MC6810), U8 (5101)
• Test display interrupt generator (U12)
• Check the various logic gates IC’s: U14 : CD4049 U15 : MC3459L=7437 U16 : 9602 U17 : 74L00N U18 : CD4049 U19 : CD 4011
• Hardware Self-test J5 (check correct wiring of the tester is correct)
• Check for stuck data bits
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