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| PR1ME C compiler sources derek@_NOSPAM_knosof.co.uk (Derek M. Jones) (2019-09-25) |
| Re: PR1ME C compiler sources arnold@skeeve.com (2019-09-25) |
| Re: PR1ME C compiler sources drb@ihatespam.msu.edu (2019-09-25) |
| Re: PR1ME C compiler sources drb@ihatespam.msu.edu (2019-09-25) |
| Re: PR1ME C compiler sources drb@ihatespam.msu.edu (2019-09-25) |
| Re: PR1ME C compiler sources derek@_NOSPAM_knosof.co.uk (Derek M. Jones) (2019-09-26) |
| Re: PR1ME C compiler sources arnold@skeeve.com (2019-09-26) |
| Re: PR1ME C compiler sources drb@ihatespam.msu.edu (2019-09-27) |
| Re: PR1ME C compiler sources derek@_NOSPAM_knosof.co.uk (Derek M. Jones) (2019-09-28) |
| Re: PR1ME C compiler sources gneuner2@comcast.net (George Neuner) (2019-09-27) |
| Re: PR1ME C compiler pointer management drb@ihatespam.msu.edu (2019-09-28) |
| [7 later articles] |
| From: | drb@ihatespam.msu.edu (Dennis Boone) |
| Newsgroups: | comp.compilers |
| Date: | Wed, 25 Sep 2019 20:28:56 -0500 |
| Organization: | Compilers Central |
| References: | 19-09-003 19-09-004 19-09-006 |
| Injection-Info: | gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="95187"; mail-complaints-to="abuse@iecc.com" |
| Keywords: | C, history, comment |
| Posted-Date: | 25 Sep 2019 21:39:16 EDT |
> > [As I recall the Prime machines addressed 16 bit words. What did you do
> > for character pointers? -John]
See pdf pages 42 and 43 here:
https://sysovl.info/pages/blobs/prime/programmercompanion/Pocket%20Guide%20Assembly%20Language%20Rev%2018%20FDR3340%201980.pdf
for details on the pointer formats.
De
[The Prime machines suffered from having too many versions of
everything. Page 41 of that quick reference card has a 48 bit pointer
format with a bit number in the low 16 bits. It seems unlikely that a
C compiler would use that as a general pointer format since it doesn't
fit in any sort of normal int, and it's not what you'd want to point
at an int or a function or anything bigger than a char. -John]
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