[email protected] (Paul Gilmartin) writes: > How did the 67 deal with legacy code's use of the sign bit to terminate > parameter lists? Did it also have a 31-bit mode? But I suppose most > such code was written for 24-bit addressing.
as mentioned here ... science center had expected to get the mission for virtual memory system ... and work on machine for the MIT project mac bid ... sort of as followon to (ibm 7094) ctss. However the mission went instead to new tss/360 group in Mohansic ... along with 360/67. at that time there was no legacy code with 24bit addressing. http://www.garlic.com/~lynn/2014d.html#23 Mainframe memories http://www.garlic.com/~lynn/2014d.html#25 Mainframe memories http://www.garlic.com/~lynn/2014d.html#27 Mainframe memories http://www.garlic.com/~lynn/2014d.html#32 Mainframe memories http://www.garlic.com/~lynn/2014d.html#56 Difference between MVS and z / OS systems once the legacy code was in place there were all sorts of problems. this is tale that 360 was originally suppose to be a ascii machine ... but a temporary hack was done because the new ascii unit record gear wasn't available ... and had to make do with lots of old BCD unit record gear (biggest computer goof ever): http://www.bobbemer.com/P-BIT.HTM other of his computer history http://www.bobbemer.com/HISTORY.HTM other posts in this thread: http://www.garlic.com/~lynn/2014d.html#54 Difference between MVS and z / OS systems http://www.garlic.com/~lynn/2014d.html#55 Difference between MVS and z / OS systems http://www.garlic.com/~lynn/2014d.html#57 Difference between MVS and z / OS systems http://www.garlic.com/~lynn/2014d.html#59 Difference between MVS and z / OS systems http://www.garlic.com/~lynn/2014d.html#60 Difference between MVS and z / OS systems http://www.garlic.com/~lynn/2014d.html#61 Difference between MVS and z / OS systems http://www.garlic.com/~lynn/2014d.html#62 Difference between MVS and z / OS systems -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
