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open in: 
MacOS 8.1
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Win98
|
DOS
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view JSON data
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view as text
This file was processed as: Mailbox/MIME Entity
(archive/mbox).
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 100%
| dexvert
| Newsgroup Content (archive/news)
| magic
| Supported |
| 100%
| dexvert
| Mailbox/MIME Entity (archive/mbox)
| magic
| Supported |
| 100%
| dexvert
| Internet Message Format (text/imf)
| magic
| Supported |
| 1%
| dexvert
| Text File (text/txt)
| fallback
| Supported |
| 100%
| file
| news, ASCII text
| default
| |
| 100%
| checkBytes
| Printable ASCII
| default
| |
| 100%
| dexmagic
| PrintFox/Pagefox WEAK
| default
| |
| 100%
| perlTextCheck
| Likely Text (Perl)
| default
| |
| 100%
| siegfried
| fmt/950 MIME Email (1.0)
| default
| |
| 100%
| detectItEasy
| Format: plain text[LF]
| default (weak)
| |
| 100%
| xdgMime
| message/news
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 50 61 74 68 3a 20 6e 65 | 77 73 2e 77 6f 72 6c 64 |Path: ne|ws.world|
|00000010| 6c 69 6e 78 2e 63 6f 6d | 21 6e 65 77 73 0a 46 72 |linx.com|!news.Fr|
|00000020| 6f 6d 3a 20 47 69 6c 6c | 65 73 20 54 75 72 67 65 |om: Gill|es Turge|
|00000030| 6f 6e 20 3c 74 75 72 67 | 65 6f 6e 40 39 62 69 74 |on <turg|eon@9bit|
|00000040| 2e 71 63 2e 63 61 3e 0a | 4e 65 77 73 67 72 6f 75 |.qc.ca>.|Newsgrou|
|00000050| 70 73 3a 20 63 6f 6d 70 | 2e 73 79 73 2e 6d 36 38 |ps: comp|.sys.m68|
|00000060| 6b 0a 53 75 62 6a 65 63 | 74 3a 20 52 65 3a 20 36 |k.Subjec|t: Re: 6|
|00000070| 38 30 30 30 20 77 61 69 | 74 20 73 74 61 74 65 73 |8000 wai|t states|
|00000080| 0a 44 61 74 65 3a 20 4d | 6f 6e 2c 20 30 31 20 4a |.Date: M|on, 01 J|
|00000090| 61 6e 20 31 39 39 36 20 | 31 36 3a 32 30 3a 32 37 |an 1996 |16:20:27|
|000000a0| 20 2d 30 35 30 30 0a 4f | 72 67 61 6e 69 7a 61 74 | -0500.O|rganizat|
|000000b0| 69 6f 6e 3a 20 57 6f 72 | 6c 64 4c 69 6e 78 20 54 |ion: Wor|ldLinx T|
|000000c0| 65 6c 65 63 6f 6d 6d 75 | 6e 69 63 61 74 69 6f 6e |elecommu|nication|
|000000d0| 73 20 49 6e 63 2e 0a 4d | 65 73 73 61 67 65 2d 49 |s Inc..M|essage-I|
|000000e0| 44 3a 20 3c 33 30 45 38 | 35 30 31 42 2e 32 46 43 |D: <30E8|501B.2FC|
|000000f0| 38 40 39 62 69 74 2e 71 | 63 2e 63 61 3e 0a 52 65 |8@9bit.q|c.ca>.Re|
|00000100| 66 65 72 65 6e 63 65 73 | 3a 20 3c 34 63 36 72 36 |ferences|: <4c6r6|
|00000110| 36 24 38 31 37 40 6d 61 | 73 61 6c 61 2e 63 63 2e |6$817@ma|sala.cc.|
|00000120| 75 68 2e 65 64 75 3e 0a | 52 65 70 6c 79 2d 54 6f |uh.edu>.|Reply-To|
|00000130| 3a 20 74 75 72 67 65 6f | 6e 40 39 62 69 74 2e 71 |: turgeo|n@9bit.q|
|00000140| 63 2e 63 61 0a 4e 4e 54 | 50 2d 50 6f 73 74 69 6e |c.ca.NNT|P-Postin|
|00000150| 67 2d 48 6f 73 74 3a 20 | 6d 6f 64 65 6d 31 33 2e |g-Host: |modem13.|
|00000160| 39 62 69 74 2e 71 63 2e | 63 61 0a 4d 69 6d 65 2d |9bit.qc.|ca.Mime-|
|00000170| 56 65 72 73 69 6f 6e 3a | 20 31 2e 30 0a 43 6f 6e |Version:| 1.0.Con|
|00000180| 74 65 6e 74 2d 54 79 70 | 65 3a 20 74 65 78 74 2f |tent-Typ|e: text/|
|00000190| 70 6c 61 69 6e 3b 20 63 | 68 61 72 73 65 74 3d 69 |plain; c|harset=i|
|000001a0| 73 6f 2d 38 38 35 39 2d | 31 0a 43 6f 6e 74 65 6e |so-8859-|1.Conten|
|000001b0| 74 2d 54 72 61 6e 73 66 | 65 72 2d 45 6e 63 6f 64 |t-Transf|er-Encod|
|000001c0| 69 6e 67 3a 20 71 75 6f | 74 65 64 2d 70 72 69 6e |ing: quo|ted-prin|
|000001d0| 74 61 62 6c 65 0a 58 2d | 4d 61 69 6c 65 72 3a 20 |table.X-|Mailer: |
|000001e0| 4d 6f 7a 69 6c 6c 61 20 | 32 2e 30 62 34 20 28 4d |Mozilla |2.0b4 (M|
|000001f0| 61 63 69 6e 74 6f 73 68 | 3b 20 49 3b 20 50 50 43 |acintosh|; I; PPC|
|00000200| 29 0a 0a 3e 20 2e 2e 2e | 20 49 20 72 65 61 6c 69 |)..> ...| I reali|
|00000210| 7a 65 64 20 74 68 61 74 | 20 6d 79 20 52 41 4d 2f |zed that| my RAM/|
|00000220| 45 50 52 4f 4d 20 61 72 | 65 20 73 6c 6f 77 20 65 |EPROM ar|e slow e|
|00000230| 6e 6f 75 67 68 20 74 68 | 61 74 20 49 20 61 6d 20 |nough th|at I am |
|00000240| 67 6f 69 6e 67 20 74 6f | 20 6e 65 65 64 20 3d 0a |going to| need =.|
|00000250| 74 6f 0a 3e 20 69 6e 73 | 65 72 74 20 73 6f 6d 65 |to.> ins|ert some|
|00000260| 20 77 61 69 74 20 73 74 | 61 74 65 73 20 28 6d 79 | wait st|ates (my|
|00000270| 20 72 65 61 73 6f 6e 69 | 6e 67 20 69 73 20 74 68 | reasoni|ng is th|
|00000280| 69 73 3a 20 49 20 68 61 | 76 65 20 61 20 31 30 20 |is: I ha|ve a 10 |
|00000290| 4d 48 7a 20 63 6c 6f 63 | 6b 20 2d 20 6f 72 3d 0a |MHz cloc|k - or=.|
|000002a0| 0a 3e 20 61 20 74 69 63 | 6b 20 65 76 65 72 79 20 |.> a tic|k every |
|000002b0| 31 30 30 20 6e 73 2e 20 | 20 4d 79 20 6d 65 6d 6f |100 ns. | My memo|
|000002c0| 72 79 20 64 65 76 69 63 | 65 73 20 68 61 76 65 20 |ry devic|es have |
|000002d0| 61 6e 20 61 63 63 65 73 | 73 20 74 69 6d 65 20 6f |an acces|s time o|
|000002e0| 66 20 31 32 30 20 6e 73 | 20 6f 72 0a 3e 3d 41 30 |f 120 ns| or.>=A0|
|000002f0| 31 2e 32 20 63 6c 6f 63 | 6b 20 63 79 63 6c 65 73 |1.2 cloc|k cycles|
|00000300| 2c 20 74 68 65 72 65 66 | 6f 72 65 2c 20 49 20 77 |, theref|ore, I w|
|00000310| 69 6c 6c 20 6e 65 65 64 | 20 74 6f 20 69 6e 73 65 |ill need| to inse|
|00000320| 72 74 20 61 20 64 65 6c | 61 79 20 6f 66 20 32 20 |rt a del|ay of 2 |
|00000330| 63 6c 6f 63 6b 0a 3e 3d | 41 30 63 79 63 6c 65 73 |clock.>=|A0cycles|
|00000340| 2f 32 30 30 20 6e 73 20 | 62 65 66 6f 72 65 20 49 |/200 ns |before I|
|00000350| 20 61 73 73 65 72 74 20 | 61 20 44 54 41 43 4b 20 | assert |a DTACK |
|00000360| 66 72 6f 6d 20 74 68 65 | 20 6d 65 6d 6f 72 79 20 |from the| memory |
|00000370| 64 65 76 69 63 65 73 2e | 20 43 6f 72 72 65 63 74 |devices.| Correct|
|00000380| 3f 3d 0a 29 0a 0a 4e 6f | 2e 20 20 54 68 65 20 36 |?=.)..No|. The 6|
|00000390| 38 30 30 30 20 74 61 6b | 65 20 32 20 66 75 6c 6c |8000 tak|e 2 full|
|000003a0| 20 63 6c 6f 63 6b 20 63 | 79 63 6c 65 20 62 65 74 | clock c|ycle bet|
|000003b0| 77 65 65 6e 20 2a 41 53 | 20 61 73 73 65 72 74 69 |ween *AS| asserti|
|000003c0| 6f 6e 20 61 6e 64 20 74 | 68 65 20 64 61 74 61 20 |on and t|he data |
|000003d0| 72 3d 0a 65 61 64 20 6f | 72 20 77 72 69 74 65 2e |r=.ead o|r write.|
|000003e0| 20 20 3d 0a 0a 53 6f 20 | 79 6f 75 20 64 6f 6e 74 | =..So |you dont|
|000003f0| 20 6e 65 65 64 20 77 61 | 69 74 20 73 74 61 74 65 | need wa|it state|
|00000400| 2e 0a 0a 20 20 20 20 20 | 20 20 20 20 20 20 53 32 |... | S2|
|00000410| 20 20 53 34 20 20 53 36 | 20 3d 0a 0a 20 20 20 20 | S4 S6| =.. |
|00000420| 20 20 20 5f 20 20 20 5f | 20 20 20 5f 20 20 20 5f | _ _| _ _|
|00000430| 20 20 20 5f 20 20 20 5f | 0a 63 6c 6b 20 20 5f 7c | _ _|.clk _||
|00000440| 20 7c 5f 7c 20 7c 5f 7c | 20 7c 5f 7c 20 7c 5f 7c | |_| |_|| |_| |_||
|00000450| 20 7c 5f 7c 20 7c 20 3d | 0a 0a 0a 20 20 20 20 20 | |_| | =|... |
|00000460| 20 20 20 20 20 20 20 3c | 2d 2d 2d 2d 2d 2d 2d 3e | <|------->|
|00000470| 0a 20 20 20 20 5f 5f 5f | 5f 5f 5f 5f 20 20 20 20 |. ___|____ |
|00000480| 20 20 20 20 20 20 20 20 | 20 5f 5f 5f 5f 5f 5f 5f | | _______|
|00000490| 0a 2a 41 53 20 20 20 20 | 20 20 20 20 7c 5f 5f 5f |.*AS | |___|
|000004a0| 5f 5f 5f 5f 5f 5f 5f 5f | 7c 0a 0a 5f 5f 5f 5f 5f |________||.._____|
|000004b0| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 20 20 20 20 20 |________|___ |
|000004c0| 20 20 20 5f 5f 5f 5f 5f | 5f 5f 5f 0a 2a 44 54 41 | _____|___.*DTA|
|000004d0| 43 4b 20 20 20 20 20 20 | 20 20 20 20 7c 5f 5f 5f |CK | |___|
|000004e0| 5f 5f 5f 7c 0a 20 20 20 | 20 20 20 20 20 20 20 20 |___|. | |
|000004f0| 20 20 20 20 20 20 20 20 | 20 5e 20 36 38 6b 20 74 | | ^ 68k t|
|00000500| 61 6b 65 20 64 61 74 61 | 20 68 65 72 65 0a 0a 0a |ake data| here...|
|00000510| 3e 20 4d 79 20 71 75 65 | 73 74 69 6f 6e 20 69 73 |> My que|stion is|
|00000520| 3a 20 20 49 73 20 74 68 | 65 20 62 65 73 74 20 77 |: Is th|e best w|
|00000530| 61 79 20 74 6f 20 64 6f | 20 74 68 69 73 20 74 6f |ay to do| this to|
|00000540| 20 74 61 6b 65 20 61 20 | 62 69 6e 61 72 79 20 63 | take a |binary c|
|00000550| 6f 75 6e 74 65 72 0a 3e | 20 28 66 6f 72 20 65 78 |ounter.>| (for ex|
|00000560| 61 6d 70 6c 65 3a 20 61 | 20 37 34 4c 53 31 36 31 |ample: a| 74LS161|
|00000570| 29 2c 20 63 6f 6e 6e 65 | 63 74 20 69 74 20 74 6f |), conne|ct it to|
|00000580| 20 74 68 65 20 73 79 73 | 74 65 6d 20 63 6c 6f 63 | the sys|tem cloc|
|00000590| 6b 2c 20 70 72 6f 67 72 | 61 6d 20 69 74 20 74 6f |k, progr|am it to|
|000005a0| 0a 3e 20 63 6f 75 6e 74 | 64 6f 77 6e 20 66 6f 72 |.> count|down for|
|000005b0| 20 32 20 63 6c 6f 63 6b | 20 63 79 63 6c 65 73 20 | 2 clock| cycles |
|000005c0| 77 68 65 6e 65 76 65 72 | 20 74 68 65 20 6d 65 6d |whenever| the mem|
|000005d0| 6f 72 79 20 69 73 20 61 | 63 63 65 73 73 65 64 20 |ory is a|ccessed |
|000005e0| 61 6e 64 20 61 73 73 65 | 72 74 0a 3e 20 44 54 41 |and asse|rt.> DTA|
|000005f0| 43 4b 20 77 68 65 6e 65 | 76 65 72 20 74 68 69 73 |CK whene|ver this|
|00000600| 20 74 69 6d 65 72 20 68 | 61 73 20 65 78 70 69 72 | timer h|as expir|
|00000610| 65 64 3f 20 20 57 69 6c | 6c 20 74 68 69 73 20 77 |ed? Wil|l this w|
|00000620| 6f 72 6b 2c 20 69 73 20 | 74 68 65 72 65 20 61 0a |ork, is |there a.|
|00000630| 3e 20 62 65 74 74 65 72 | 20 77 61 79 20 28 75 73 |> better| way (us|
|00000640| 69 6e 67 20 63 6f 6e 76 | 65 6e 74 69 6f 6e 61 6c |ing conv|entional|
|00000650| 20 70 61 72 74 73 2c 20 | 49 20 64 6f 6e 27 74 20 | parts, |I don't |
|00000660| 68 61 76 65 20 61 20 50 | 41 4c 2f 65 74 63 20 70 |have a P|AL/etc p|
|00000670| 72 6f 67 72 61 6d 6d 65 | 72 29 2c 3d 0a 0a 3e 20 |rogramme|r),=..> |
|00000680| 6f 72 20 64 6f 20 49 20 | 68 61 76 65 20 61 62 73 |or do I |have abs|
|00000690| 6f 6c 75 74 65 6c 79 20 | 6e 6f 20 69 64 65 61 20 |olutely |no idea |
|000006a0| 77 68 61 74 20 49 27 6d | 20 74 61 6c 6b 69 6e 67 |what I'm| talking|
|000006b0| 20 61 62 6f 75 74 3f 20 | 3b 29 0a 0a 43 6f 75 6e | about? |;)..Coun|
|000006c0| 74 65 72 73 20 61 72 65 | 20 6f 6b 2e 20 20 53 68 |ters are| ok. Sh|
|000006d0| 69 66 74 20 72 65 67 69 | 73 74 65 72 73 20 61 72 |ift regi|sters ar|
|000006e0| 65 20 61 6c 73 6f 20 6f | 6b 2e 20 20 49 66 20 79 |e also o|k. If y|
|000006f0| 6f 75 20 72 65 61 64 20 | 66 72 65 6e 63 68 2c 20 |ou read |french, |
|00000700| 49 20 63 61 6e 20 73 3d | 0a 65 6e 64 20 79 6f 75 |I can s=|.end you|
|00000710| 20 61 20 3d 0a 0a 63 6f | 70 79 20 6f 66 20 6d 79 | a =..co|py of my|
|00000720| 20 63 6c 61 73 73 20 6c | 65 63 74 75 72 65 73 20 | class l|ectures |
|00000730| 6f 6e 20 74 68 69 73 20 | 73 75 62 6a 65 63 74 2e |on this |subject.|
|00000740| 20 49 20 77 72 69 74 65 | 20 6f 6e 20 74 69 6d 69 | I write| on timi|
|00000750| 6e 67 73 2c 20 77 61 69 | 74 20 73 74 61 74 65 73 |ngs, wai|t states|
|00000760| 20 3d 0a 61 6e 64 20 6f | 74 68 65 72 73 20 3d 0a | =.and o|thers =.|
|00000770| 0a 73 75 62 6a 65 63 74 | 73 2e 0a |.subject|s.. |
+--------+-------------------------+-------------------------+--------+--------+
