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PGP Key Ring | 1997-10-08 | 2.1 KB |
open in:
MacOS 8.1
|
Win98
|
DOS
view JSON data
|
view as text
This file was processed as: PGP Key Ring
(other/pgpKeyRing).
This format is not currently supported by dexvert.
Confidence | Program | Detection | Match Type | Support
|
---|
10%
| dexvert
| Truevision Targa Graphic (image/tga)
| magic
| Supported |
1%
| dexvert
| PGP Key Ring (other/pgpKeyRing)
| magic
| Unsupported |
100%
| file
| Targa image data - Map (45312-5) 2661 x 16650 x 32 +24899 +26723 - 3-bit alpha - top - interleave "ache is a special storage area that contains copies of data available for fast access."
| default (weak)
| |
99%
| file
| OpenPGP Public Key Version 5
| default (weak)
| |
98%
| file
| data
| default
| |
100%
| xdgMime
| image/x-tga
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 9a 01 01 00 b1 05 00 00 | 43 61 63 68 65 0a 0a 41 |........|Cache..A|
|00000010| 20 63 61 63 68 65 20 69 | 73 20 61 20 73 70 65 63 | cache i|s a spec|
|00000020| 69 61 6c 20 73 74 6f 72 | 61 67 65 20 61 72 65 61 |ial stor|age area|
|00000030| 20 74 68 61 74 20 63 6f | 6e 74 61 69 6e 73 20 63 | that co|ntains c|
|00000040| 6f 70 69 65 73 20 6f 66 | 20 64 61 74 61 20 61 76 |opies of| data av|
|00000050| 61 69 6c 61 62 6c 65 20 | 66 6f 72 20 66 61 73 74 |ailable |for fast|
|00000060| 20 61 63 63 65 73 73 2e | 0a 0a 54 77 6f 20 74 79 | access.|..Two ty|
|00000070| 70 65 73 20 6f 66 20 63 | 61 63 68 65 73 20 61 72 |pes of c|aches ar|
|00000080| 65 20 74 79 70 69 63 61 | 6c 6c 79 20 75 73 65 64 |e typica|lly used|
|00000090| 20 6f 6e 20 74 6f 64 61 | 79 27 73 20 63 6f 6d 70 | on toda|y's comp|
|000000a0| 75 74 65 72 20 73 79 73 | 74 65 6d 73 2e 20 20 0a |uter sys|tems. .|
|000000b0| 0a 41 20 64 69 73 6b 20 | 63 61 63 68 65 20 69 73 |.A disk |cache is|
|000000c0| 20 61 20 73 65 63 74 69 | 6f 6e 20 6f 66 20 52 41 | a secti|on of RA|
|000000d0| 4d 20 6d 65 6d 6f 72 79 | 20 74 68 61 74 20 69 73 |M memory| that is|
|000000e0| 20 75 73 65 64 20 74 6f | 20 68 6f 6c 64 20 64 61 | used to| hold da|
|000000f0| 74 61 20 61 73 20 69 74 | 20 69 73 20 72 65 61 64 |ta as it| is read|
|00000100| 20 66 72 6f 6d 20 74 68 | 65 20 68 61 72 64 20 64 | from th|e hard d|
|00000110| 69 73 6b 20 64 72 69 76 | 65 2e 20 20 57 68 65 6e |isk driv|e. When|
|00000120| 20 61 64 64 69 74 69 6f | 6e 61 6c 20 64 61 74 61 | additio|nal data|
|00000130| 20 69 73 20 6e 65 65 64 | 65 64 2c 20 74 68 65 20 | is need|ed, the |
|00000140| 73 79 73 74 65 6d 20 63 | 68 65 63 6b 73 20 74 68 |system c|hecks th|
|00000150| 65 20 63 61 63 68 65 2e | 20 20 49 66 20 74 68 65 |e cache.| If the|
|00000160| 20 64 61 74 61 20 68 61 | 73 20 62 65 65 6e 20 70 | data ha|s been p|
|00000170| 72 65 76 69 6f 75 73 6c | 79 20 6c 6f 61 64 65 64 |reviousl|y loaded|
|00000180| 2c 20 74 68 65 20 64 61 | 74 61 20 69 73 20 72 65 |, the da|ta is re|
|00000190| 61 64 20 66 72 6f 6d 20 | 74 68 65 20 63 61 63 68 |ad from |the cach|
|000001a0| 65 20 69 6e 73 74 65 61 | 64 20 6f 66 20 66 72 6f |e instea|d of fro|
|000001b0| 6d 20 74 68 65 20 68 61 | 72 64 20 64 69 73 6b 20 |m the ha|rd disk |
|000001c0| 64 72 69 76 65 2c 20 72 | 65 73 75 6c 74 69 6e 67 |drive, r|esulting|
|000001d0| 20 69 6e 20 61 20 64 72 | 61 6d 61 74 69 63 20 73 | in a dr|amatic s|
|000001e0| 70 65 65 64 20 69 6d 70 | 72 6f 76 65 6d 65 6e 74 |peed imp|rovement|
|000001f0| 2e 0a 0a 41 20 6d 65 6d | 6f 72 79 20 63 61 63 68 |...A mem|ory cach|
|00000200| 65 20 63 6f 6e 73 69 73 | 74 73 20 6f 66 20 68 69 |e consis|ts of hi|
|00000210| 67 68 2d 73 70 65 65 64 | 20 6d 65 6d 6f 72 79 20 |gh-speed| memory |
|00000220| 75 73 65 64 20 74 6f 20 | 68 6f 6c 64 20 64 61 74 |used to |hold dat|
|00000230| 61 20 72 65 61 64 20 66 | 72 6f 6d 20 6d 61 69 6e |a read f|rom main|
|00000240| 20 6d 65 6d 6f 72 79 2e | 20 20 57 68 65 6e 20 61 | memory.| When a|
|00000250| 64 64 69 74 69 6f 6e 61 | 6c 20 64 61 74 61 20 69 |dditiona|l data i|
|00000260| 73 20 6e 65 65 64 65 64 | 2c 20 74 68 65 20 73 79 |s needed|, the sy|
|00000270| 73 74 65 6d 20 63 68 65 | 63 6b 73 20 74 68 65 20 |stem che|cks the |
|00000280| 6d 65 6d 6f 72 79 20 63 | 61 63 68 65 2e 20 20 49 |memory c|ache. I|
|00000290| 66 20 74 68 65 20 6e 65 | 65 64 65 64 20 64 61 74 |f the ne|eded dat|
|000002a0| 61 20 69 73 20 69 6e 20 | 74 68 65 20 63 61 63 68 |a is in |the cach|
|000002b0| 65 2c 20 74 68 65 20 73 | 79 73 74 65 6d 20 72 65 |e, the s|ystem re|
|000002c0| 61 64 73 20 69 74 20 66 | 72 6f 6d 20 74 68 65 20 |ads it f|rom the |
|000002d0| 63 61 63 68 65 2c 20 72 | 65 73 75 6c 74 69 6e 67 |cache, r|esulting|
|000002e0| 20 69 6e 20 61 20 73 69 | 67 6e 69 66 69 63 61 6e | in a si|gnifican|
|000002f0| 74 20 73 70 65 65 64 20 | 69 6d 70 72 6f 76 65 6d |t speed |improvem|
|00000300| 65 6e 74 2e 0a 0a 41 20 | 6d 65 6d 6f 72 79 20 63 |ent...A |memory c|
|00000310| 61 63 68 65 20 69 73 20 | 6f 66 74 65 6e 20 72 65 |ache is |often re|
|00000320| 66 65 72 72 65 64 20 74 | 6f 20 61 73 20 61 20 4c |ferred t|o as a L|
|00000330| 65 76 65 6c 20 32 20 63 | 61 63 68 65 20 6f 72 20 |evel 2 c|ache or |
|00000340| 61 20 4c 32 20 63 61 63 | 68 65 2e 20 20 54 68 65 |a L2 cac|he. The|
|00000350| 20 4c 65 76 65 6c 20 31 | 20 63 61 63 68 65 20 69 | Level 1| cache i|
|00000360| 73 20 74 68 65 20 63 61 | 63 68 65 20 6d 65 6d 6f |s the ca|che memo|
|00000370| 72 79 20 6c 6f 63 61 74 | 65 64 20 6f 6e 20 74 68 |ry locat|ed on th|
|00000380| 65 20 6d 69 63 72 6f 70 | 72 6f 63 65 73 73 6f 72 |e microp|rocessor|
|00000390| 2e 20 20 54 68 65 20 4c | 65 76 65 6c 20 32 20 63 |. The L|evel 2 c|
|000003a0| 61 63 68 65 20 69 73 20 | 61 64 64 69 74 69 6f 6e |ache is |addition|
|000003b0| 61 6c 20 63 61 63 68 65 | 20 6d 65 6d 6f 72 79 20 |al cache| memory |
|000003c0| 6e 6f 74 20 6c 6f 63 61 | 74 65 64 20 6f 6e 20 74 |not loca|ted on t|
|000003d0| 68 65 20 6d 69 63 72 6f | 70 72 6f 63 65 73 73 6f |he micro|processo|
|000003e0| 72 2e 0a 0a 43 61 63 68 | 65 20 6d 65 6d 6f 72 79 |r...Cach|e memory|
|000003f0| 20 69 73 20 65 73 73 65 | 6e 74 69 61 6c 20 66 6f | is esse|ntial fo|
|00000400| 72 20 6f 70 74 69 6d 61 | 6c 20 70 65 72 66 6f 72 |r optima|l perfor|
|00000410| 6d 61 6e 63 65 20 6f 66 | 20 63 6f 6d 70 75 74 65 |mance of| compute|
|00000420| 72 20 73 79 73 74 65 6d | 73 20 74 68 61 74 20 75 |r system|s that u|
|00000430| 73 65 20 68 69 67 68 2d | 73 70 65 65 64 20 70 72 |se high-|speed pr|
|00000440| 6f 63 65 73 73 6f 72 73 | 2e 20 20 0a 0a 43 61 63 |ocessors|. ..Cac|
|00000450| 68 65 20 6d 65 6d 6f 72 | 79 20 69 73 20 76 65 72 |he memor|y is ver|
|00000460| 79 20 65 78 70 65 6e 73 | 69 76 65 2c 20 61 6e 64 |y expens|ive, and|
|00000470| 20 63 61 6e 20 61 64 64 | 20 73 65 76 65 72 61 6c | can add| several|
|00000480| 20 68 75 6e 64 72 65 64 | 20 64 6f 6c 6c 61 72 73 | hundred| dollars|
|00000490| 20 74 6f 20 74 68 65 20 | 63 6f 73 74 20 6f 66 20 | to the |cost of |
|000004a0| 61 20 63 6f 6d 70 75 74 | 65 72 20 73 79 73 74 65 |a comput|er syste|
|000004b0| 6d 2e 20 20 42 75 74 2c | 20 61 20 63 61 63 68 65 |m. But,| a cache|
|000004c0| 20 63 61 6e 20 61 6c 73 | 6f 20 68 61 76 65 20 61 | can als|o have a|
|000004d0| 20 73 69 67 6e 69 66 69 | 63 61 6e 74 20 65 66 66 | signifi|cant eff|
|000004e0| 65 63 74 20 6f 6e 20 70 | 65 72 66 6f 72 6d 61 6e |ect on p|erforman|
|000004f0| 63 65 2e 0a 0a 53 6f 6d | 65 20 63 6f 6d 70 75 74 |ce...Som|e comput|
|00000500| 65 72 73 20 66 65 61 74 | 75 72 65 20 73 6f 70 68 |ers feat|ure soph|
|00000510| 69 73 74 69 63 61 74 65 | 64 20 63 61 63 68 65 73 |isticate|d caches|
|00000520| 20 74 68 61 74 20 68 61 | 76 65 20 62 65 65 6e 20 | that ha|ve been |
|00000530| 64 65 73 69 67 6e 65 64 | 20 74 6f 20 70 72 6f 76 |designed| to prov|
|00000540| 69 64 65 20 6d 61 78 69 | 6d 75 6d 20 70 65 72 66 |ide maxi|mum perf|
|00000550| 6f 72 6d 61 6e 63 65 2e | 20 20 54 68 65 73 65 20 |ormance.| These |
|00000560| 63 61 63 68 65 73 20 61 | 72 65 20 73 6f 6d 65 74 |caches a|re somet|
|00000570| 69 6d 65 73 20 72 65 66 | 65 72 72 65 64 20 74 6f |imes ref|erred to|
|00000580| 20 61 73 20 62 75 72 73 | 74 20 63 61 63 68 65 2c | as burs|t cache,|
|00000590| 20 77 72 69 74 65 2d 62 | 61 63 6b 20 63 61 63 68 | write-b|ack cach|
|000005a0| 65 2c 20 6f 72 20 62 75 | 72 73 74 20 6d 6f 64 65 |e, or bu|rst mode|
|000005b0| 20 63 61 63 68 65 2e 0a | 0a 00 88 02 00 00 13 00 | cache..|........|
|000005c0| 03 00 13 00 01 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000005d0| 01 00 01 00 05 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|000005e0| 02 00 06 00 02 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|000005f0| 03 00 08 00 02 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000600| 02 00 0a 00 06 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000610| 03 00 10 00 9c 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000620| 02 00 ac 00 0a 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000630| 03 00 b6 00 38 01 00 00 | 00 00 00 40 00 00 00 00 |....8...|...@....|
|00000640| 02 00 ee 01 0c 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000650| 03 00 fa 01 2e 01 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000660| 02 00 28 03 0d 00 00 00 | 00 00 00 40 00 00 00 00 |..(.....|...@....|
|00000670| 03 00 35 03 06 00 00 00 | 00 00 00 40 00 00 00 00 |..5.....|...@....|
|00000680| 02 00 3b 03 08 00 00 00 | 00 00 00 40 00 00 00 00 |..;.....|...@....|
|00000690| 03 00 43 03 3a 02 00 00 | 00 00 00 40 00 00 00 00 |..C.:...|...@....|
|000006a0| 02 00 7d 05 0b 00 00 00 | 00 00 00 40 00 00 00 00 |..}.....|...@....|
|000006b0| 03 00 88 05 02 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|000006c0| 02 00 8a 05 10 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|000006d0| 03 00 9a 05 05 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|000006e0| 02 00 9f 05 10 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|000006f0| 03 00 af 05 03 00 00 00 | 00 00 00 40 00 00 00 00 |........|...@....|
|00000700| e8 fe 00 00 00 00 00 00 | bc 02 00 00 00 00 00 00 |........|........|
|00000710| 02 22 41 72 69 61 6c 00 | 00 00 00 00 00 00 00 00 |."Arial.|........|
|00000720| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000730| 00 00 38 ff 00 00 00 00 | 00 00 bc 02 00 00 00 00 |..8.....|........|
|00000740| 00 00 02 22 41 72 69 61 | 6c 00 00 00 00 00 00 00 |..."Aria|l.......|
|00000750| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000760| 00 00 00 00 38 ff 00 00 | 00 00 00 00 90 01 00 00 |....8...|........|
|00000770| 00 00 00 00 02 22 41 72 | 69 61 6c 00 00 00 00 00 |....."Ar|ial.....|
|00000780| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000790| 00 00 00 00 00 00 01 00 | 01 00 06 00 01 00 07 00 |........|........|
|000007a0| 07 00 01 00 08 00 61 00 | 01 00 62 00 62 00 01 00 |......a.|..b.b...|
|000007b0| 63 00 a8 00 01 00 a9 00 | a9 00 01 00 aa 00 ea 01 |c.......|........|
|000007c0| 01 00 eb 01 eb 01 01 00 | ec 01 fd 02 01 00 fe 02 |........|........|
|000007d0| fe 02 01 00 ff 02 db 03 | 01 00 dc 03 dc 03 01 00 |........|........|
|000007e0| dd 03 44 04 01 00 45 04 | 45 04 01 00 46 04 ec 04 |..D...E.|E...F...|
|000007f0| 01 00 ed 04 ed 04 01 00 | ee 04 b0 05 01 00 b1 05 |........|........|
|00000800| b1 05 01 00 b2 05 b2 05 | 00 00 00 00 00 00 00 00 |........|........|
|00000810| 00 00 00 00 64 00 20 00 | 14 00 00 00 01 6e 04 01 |....d. .|.....n..|
|00000820| dc 08 01 4a 0d 01 b8 11 | 01 26 16 01 94 1a 01 02 |...J....|.&......|
|00000830| 1f 01 70 23 01 de 27 01 | 4c 2c 01 ba 30 01 28 35 |..p#..'.|L,..0.(5|
|00000840| 01 96 39 01 04 3e | |..9..> | |
+--------+-------------------------+-------------------------+--------+--------+