Simple: No
Longer: I'll guess you're talking about clearing memory? I do seem to
remember writing code on a z80 to clear a section of bytes to zero, and
oops if I messed up it would keep writing zeros to 64K, wrap around to
zero, and then continue on until the zeros hit the instructions that
were being executed. Everything but parts of the loop code was gone,
and since x'00' is a z80 NOP, the processor would remain running - just
not really doing much of value.
On 7/19/2019 3:16 PM, Lester, Bob wrote:
Hi All,
Who remembers how to "ripple core" on a 360/75J? Back in the day, I was taught
that it "wrote un-digit zeros" to all storage locations (main + LCS) on the box. If
course, an IPL was required after this was done.
Not sure how widely it was used. A simple yes or no is OK if you cannot
provide details. 😊
Thanks!
BobL
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