960L Multi-Channel Digital Effects System Service Manual
6-10
0x55 are tested. An address test is also run that writes each address value into its associated memory
location (address 29 has the value 29 written into it, address 30 has the value 30 written into it, etc...). This
test confirms that the Z80 can access all of its banked SRAM.
If this test fails but the Z80BootTest and Z80DpramTest pass, there is probably a problem with the address,
data or control lines between the SRAM and the Z80.
Parameters:
CardID:
This number selects which reverb card to test. Legal values are 0 and 1, since only two reverb cards will be
supported. If only one card is present use the number 0.
Z80Id:
This specifies which Z80 on the card to test. Legal Values are 0 and 1.
NumRepeats:
This optional parameter specifies how many times to run the test. A value of 0 runs the test indefinitely (until
a key is pressed). Dots are shown on the display to indicate that the test is still running.
Notes:
- It is assumed that the following tests pass:
- DPRAM Test
- Z80BootTest
- Z80DpramTest
Z80 Wait Test:
The syntax for the Z80 Wait Test is: Z80WaitTest CardId Z80ID [NumRepeats].
This test verifies the WAIT line from the Lexichip3 to the Z80.
Parameters:
CardID:
This number selects which reverb card to test. Legal values are 0 and 1, since only two reverb cards will be
supported. If only one card is present use the number 0.
Z80Id:
This specifies which Z80 on the card to reset. Legal Values are 0 and 1.
NumRepeats:
This optional parameter specifies how many times to run the test. A value of 0 runs the test indefinitely (until
a key is pressed). Dots are shown on the display to indicate that the test is still running.
Lexichip3 Tests:
Lexichip3 WCS Test:
The syntax for the Lexichip3 WCS Test is: Lexichip3WCSTest CardId Z80ID Lexichip3Id [NumRepeats].
This is a memory test of the WCS (program) memory on the Lexichip3. This test confirms that the Z80 can
access all of the Lexichip3's WCS (program) memory space. The test begins by filling the memory space
under test with a specific data value then reading back the contents of each memory location, confirming
the data contained therein is correct. Values of 0, 0xFF, 0xAA, and 0x55 are tested. An address test is also
run that writes each address value into its associated memory location (address 29 has the value 29 written
into it, address 30 has the value 30 written into it, etc...).
If this test fails but the Z80BootTest and Z80DpramTest pass, there is probably a problem with the address,
data or control lines between the Lexichip3 and the Z80.
Parameters:
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