4 ms·
Yes, a lot machines of that era did. The Univac 1100 series did, and I believe the IBM 709 and 7090 machines did as well. The low performance machines used ac
by dbcurtis 9y ago
Yes, a lot machines of that era did. The Univac 1100 series did, and I believe the IBM 709 and 7090 machines did as well. The low performance machines used actual memory, the higher performance machines had backing registers in the CPU.
- Animats 9y agoThe UNIVAC 1100 machines didn't put registers in memory; they just allowed programs to reference them via memory addresses. This removed the need for register-to-register instructions.
- krylon 9y agoThat is what the two above postings said, too. Or at least I understood them to say that.
- dbcurtis 9y ago1100/10 used main memory (plated wire) for the registers. 1101, 1102, and 1108 may have but I can't say for certain. 1100/80 definately use registers in the CPU and redirected matching memory addresses to the registers.