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141 lines
4.3 KiB
Plaintext
141 lines
4.3 KiB
Plaintext
Original Source:
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http://www.bitsavers.org/pdf/bellLabs/unix/PreliminaryUnixImplementationDocument_Jun72.pdf
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------
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I started with the pdf, using Preview in mac I selected regions and
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copied and created new doc, saved it as jpeg and then used
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the online OCR program: http://asv.aso.ecei.tohoku.ac.jp/tesseract/
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I then manually edited each file.
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The files are named according to the page index in the pdf and the
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section and page given in the page footer. Page headers and footers
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were not captured.
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------------------
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e00-01 to e00-10 (10) - u0 -
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assigned: tim newsham, complete
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reviewed:
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e01-01 to e01-10 (10) - u1 -
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assigned: Hellwig Geisse
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reviewed:
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e02-01 to e02-10 (10) - u2 -
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assigned: Brantley Coile
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reviewed:
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e03-01 to e03-04 (4) - u3 -
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assigned: Tim Bradshaw
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reviewed:
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e04-01 to e04-07 (7) - u4 -
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assigned: Alex Garbutt
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reviewed:
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e05-01 to e05-06 (6) - u5 -
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assigned: Ralph Logan, complete
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reviewed:
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e06-01 to e06-06 (6) - u6 -
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assigned: johan beisser
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reviewed:
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e07-01 to e07-08 (8) - u7 -
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assigned: Naoki Hamada
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reviewed:
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e08-01 to e08-09 (9) - u8 -
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assigned: Christian David
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reviewed:
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e09-01 to e09-08 (8) - u9 -
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assigned: tim newsham
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reviewed:
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e10-01 to e10-02 (2) - ux -
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assigned: tim newsham, complete
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reviewed:
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e11-01 to e11-07 (7) - sh
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we have a binary for the sh already I think. this may be optional
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assigned:
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reviewed:
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e12-01 to e12-04 (4) - init
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we have a binary for init already
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assigned:
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reviewed:
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------------------
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e00-01
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- I used spaces to line up the comment columns, not tabs. I
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picked the column distance arbitrarily.
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- the bottom section looks like it could be tabbed but my tabstops
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didnt line up with the values given so I used spaces
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e00-02
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- I used tabs for the start of each asm command but not for the
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separation between mnemonic and arguments since these didnt line up.
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with my tab stops.
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e00-03
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- left "dis addresses" typo in per original
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e00-05
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- cant tell if the "O" in quotes after 1: is a O or a 0.
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- left mispelled "mormally" in comment
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- left "file/etc/init" without space.
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e00-06
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- left mis-spacing on 5: move r5,r1.
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e00-10
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- left "/ect/init" typo
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--------------------
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I noticed that "inode" and "i-node" were used interchangably, which could possibly
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indicate two different people commenting the code. I left each as the original.
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e05-01
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- line 9 has a crossed out term, so i used the correction "r2"
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e05-01
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- line 48 comment says "panic / found no tres storage" - left it as "tres"
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no idea whether it is supposed to be "tree", "free", or "tres"
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e05-04
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- some of the latter parts of the code have comments "/ ?", left as is
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e05-05
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- looks like some of the comments contain a "does not equal symbol" manually
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created by typing =<backspace>/. I symbolized it with "=/".
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--------------------
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e06:
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- Used tabs between sections of code instead of spaces.
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For example:
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bpn rtty0 / comment
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This may need some review later. I'll go over it again this afternoon.
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--------------------
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e09-01
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- I'm using tabs between opcode and operands now
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- left "bic $!77,r1" although written comment says "? !177"
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e09-02
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- left "movb tty+38r0),r1" as is. There's a write in
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correction for "(" instead of "8". This concerns me as it
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means there are probably some errors in this listing as
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the paren is most likely the right character here.
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e09-03
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- hard to tell due to hand written correction, but I believe
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the line before "rts r0" reads "mov (sp)+,r0"
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- comment "ASC11" (one instead of I) left as is.
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e09-04
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- text comment says a label was lost! leaving it out for now.
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- correction "if count >=0" obscures original text in comment.
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no choice but to use new text.
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- "ASC11" sic
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e09-05
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- 5th to last "byte" line 2nd column is uneadable. pattern suggests
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the value "000"
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--------------------
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e10-01
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e10-02
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- I used tabs for the first tab stop and spaced out to the next step.
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- Per discussions with Brantley Coile it appears that the origianl
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source probably used tabs, and that the printout has a tab stop
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after 8 characters and another after 7 characters. The spaces
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between opcode and operands are probably due to a tab, as can be
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seen in later assembly code we have in machine readable form.
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