Glen, do you have any information available on these 360/20 specific instructions?
I would like to use the info to update the instruction lists and charts on hlasm.com. Also, if time permits, I might add support for these instructions in z390. Cheers, Abe Kornelis ========== glen herrmannsfeldt schreef op 21-5-2015 om 19:44: > "The OP said he was working with code for a model 20." > That was only barely a true S360 and had a few > instructions peculiar to it." > > Yes. XIO is the I/O instruction that reads or writes. > Like other 360's, I/O is asynchronous. You have to test > (with TIOB) to see if it is done yet. > > With 8K core, half the core is available without a base register. > As I understand it, many were only 4K. > > It does have some fairly complex instructions, such as DP, ED, and TR, > and leaves out some simple ones like L and LR. > > Registers are 16 bits, so LH, AH, SH, CH, and STH are there. > AR and SR, but not most of the other RR instructions. > PACK, UNPK, MVO, ZAP, AP, SP, CP, MP, DP so full decimal arithmetic. > MVI, MVN, MVZ, CLI, MVC, CLC, NI, OI, ED, BR, B, BASR, BAS. > > and then the model 20 specific: XIO, TIOB, HPR, SPSW. > > -- glen >
