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- From: deraadt@newt.cuc.ab.ca (Theo de Raadt)
- Subject: Re: Registerless processor
- In-Reply-To: rsnider@xrtll.uucp's message of Thu, 19 Nov 1992 01: 32:49 GMT
- Message-ID: <DERAADT.92Nov19231103@newt.newt.cuc.ab.ca>
- Sender: news@newt.cuc.ab.ca
- Nntp-Posting-Host: newt
- Organization: little lizard city
- References: <1992Nov13.181654.11692@fcom.cc.utah.edu> <BxxwAq.G8C@xrtll.uucp>
- Date: Fri, 20 Nov 1992 06:11:03 GMT
- Lines: 17
-
- In article <BxxwAq.G8C@xrtll.uucp> rsnider@xrtll.uucp (Richard Snider) writes:
- The PDP-10 could fall into this classification without too much arguing.
- It had its set of 16 general purpose registers defined simply as the
- first 16 locations in memory. Naturally, they implemented the the
-
- PDP11 registers map into the memory address space as well. There are two
- banks of 8 registers, though which can be accessed depends on a bits in
- the status register.
-
- I wonder how this was implimented? I guess that in the early PDP11's the
- registers did not exist at all. But certainly they must have fixed that
- in later versions. Was it possible to run programs out of the registers
- on a newer PDP11?
- <tdr.
- --
-
- This space not left unintentionally unblank. deraadt@newt.cuc.ab.ca
-