The z/OS system Abend code list:
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieah700/h7scc.htm
gives no message for S0D0 and S0D1, which would be generated by segment and
page exception.
In the normal case, the system processes those as segment or page faults,
>> The storage bus has been at least 16 bits wide as long as anyone can
>> remenber.
> I remember the 360/30 (used one in high school), and I'm pretty sure
> it had an 8-bit bus. But I could be wrong.
The 360/30 has an 8 bit bus and 8 bit ALU.
The 360/40 has a 16 bit bus, but still 8 bit ALU.
