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Text File  |  2000-06-30  |  19KB  |  441 lines

  1.  
  2.  
  3.                                              Vengeancσ Computinτ INC« 
  4.  
  5.                                                   10/22/89
  6.  
  7.  
  8.  
  9. *** FLASH *** FLASH *** FLASH *** FLASH *** FLASH *** FLASH ***
  10.  
  11.      Late breaking announcement:
  12.  
  13. Thi≤ confirmatioε camσ t∩ u≤ literall∙ moment≤ beforσ thσ earthquakσ iε ì
  14. Saε Francisco¼ whilσ workinτ oε thσ phonσ witΦ ou≥ Ziloτ re≡ iε Zilog'≤ ì
  15. Campbel∞ facility:
  16.  
  17. Ziloτ áwil∞ no≈ suppl∙ thσ Z84C0▒ CP╒ useΣ iε thσ P├-┌ a⌠ 1░ Mhz¼ á12.╡ ì
  18. Mh· áanΣ á1╢ Mhzí Pricinτ informatioε wa≤ t∩ comσ latσ  tha⌠ á da∙ á b∙  ì
  19. fax¼  bu⌠  event≤  oµ  ß  greate≥  magnitudσ interfered.
  20.  
  21. A≤ ásooε a≤ pricinτ informatioε i≤ available¼ Vengeancσ Computinτ áwil∞ ì
  22. establisΦ á pricσ á anΣ á deliver∙  fo≥  tw∩ á speeΣ áupgrade≤ át∩ áthσ ì
  23. standarΣ P├-┌ a⌠ 12.╡ anΣ 1╢ Mhz« Thσ upgradσ ki⌠ wil∞ consis⌠ oµ ß ne≈ ì
  24. CP╒ chip¼ │ replacemen⌠ highe≥ speeΣ RA═ chip≤ anΣ ß CP╒ crysta∞ oµ thσ ì
  25. appropriatσ speed.
  26.  
  27. Wheε áthesσ upgrade≤ arσ ordereΣ witΦ thσ P├-Z¼ somσ discoun⌠ áwil∞ ábσ ì
  28. made¼  bu⌠ unti∞ informatioε froφ Ziloτ arrives¼ ╔ canno⌠ predic⌠ áwha⌠ ì
  29. tha⌠ wil∞ be.
  30.  
  31.      Now we have 3 base models:
  32.  
  33.      PC-Z -10     10.0 Mhz       The PC-Z -10 may be upgraded
  34.      PC-Z -12     12.5 Mhz       to the -12 or -16 with the
  35.      PC-Z -16     16.0 Mhz       appropriate upgrade kit.
  36.  
  37.      P├-┌ -1▓ UPGRAD┼ KI╘        Yo⌡ ma∙ decidσ t∩ purchasσ a
  38.      PC-Z -16 UPGRADE KIT        rev A PC-Z and later boost
  39.                                  speed with these upgrades.
  40.  
  41.     This news should be very welcome to the speed demons out there!
  42.  
  43.  
  44.  
  45. For orders or catalog information:
  46.  
  47.      Vengeance Computing INC
  48.      PO BOX 15023 Industrial Station
  49.      Santa Ana Ca. 92705-0023
  50.  
  51.  
  52.  
  53. è
  54.  
  55.  
  56.  
  57.  
  58. Fo≥ áthosσ oµ yo⌡ wh∩ eithe≥ haven'⌠ hearΣ oµ i⌠ yet¼ o≥ áhaven'⌠ ábeeε ì
  59. keepinτ áu≡ t∩ datσ oε thσ project¼ le⌠ mσ fil∞ yo⌡ iε anΣ givσ áyo⌡ áß ì
  60. capsulσ descriptioε oµ thσ P├-Z« 
  61.  
  62. Firs⌠ áoff¼ wσ havσ changeΣ thσ name« AlthougΦ "Thσ Grudgeó i≤ áß ánea⌠ ì
  63. name¼ anΣ caε bσ saiΣ t∩ reflec⌠ somσ oµ thσ emotiona∞ current≤ iε áthσ ì
  64. project¼ áwσ fel⌠ tha⌠ anothe≥ namσ wa≤ needeΣ fo≥ thσ genera∞ ápublic¼ ì
  65. wh∩ migh⌠ no⌠ understand« Hencσ thσ cominτ oµ thσ namσ P├-Z
  66.  
  67. Thσ áP├-┌ ái≤ exactl∙ thσ sizσ anΣ shapσ oµ ß "Bab∙ ATó ámothe≥ áboard« ì
  68. Thi≤ ámean≤ tha⌠ i⌠ mount≤ directl∙ iε mos⌠ IB═ cabinets« áThi≤ áallow≤ ì
  69. thσ áusσ áoµ lo≈ cos⌠ cabinet≤ insteaΣ oµ thσ semΘ-custoφ ácabinet≤ áa⌠ ì
  70. $15░-$30░ áo≥ thσ bargaiε basemen⌠ specia∞ anΣ halµ ß pounΣ áoµ ácustoφ ì
  71. spacers¼ ánut≤ anΣ washers« Installatioε int∩ ß P├ cabine⌠ take≤ áabou⌠ ì
  72. 3░ seconds.
  73.  
  74. Thσ áP├-┌ provide≤ tw∩ seria∞ ports¼ ß paralle∞ port¼ flopp∙ áanΣ áSCS╔ ì
  75. disδ ports¼ anΣ ╖ P├-A╘ compatiblσ bu≤ slots« Fo≥ man∙ application≤ thσ ì
  76. buil⌠-iε áport≤ áoε thσ P├-┌ wil∞ bσ enough¼ bu⌠ addinτ ß áP├ áinterna∞ ì
  77. modeφ ái≤ áß snap¼ anΣ the∙ arσ substantiall∙ les≤ expensivσ áthaε áthσ ì
  78. samσ áexterna∞ ámodem« Als∩ thi≤ approacΦ leave≤ yo⌡ áwitΦ ámorσ ásparσ ì
  79. outlet≤ sincσ yo⌡ don'⌠ neeΣ al∞ thosσ littlσ pluτ-iε-adapters!
  80.  
  81. Iε áthσ contro∞ anΣ robotic≤ arena¼ thσ P├-┌ interface≤ ádirectl∙ áwitΦ ì
  82. standarΣ áP├ áindustria∞ interfacσ card≤ allowinτ áanaloτ áanΣ ádigita∞ ì
  83. rea∞-worlΣ ácontro∞ át∩ ábσ áimplementeΣ áwitΦ ástandarΣ áofµ-thσ-shelµ ì
  84. hardware.
  85.  
  86. Thσ áP├-┌ ái≤ structureΣ likσ an∙ othe≥ compute≥ witΦ ß ápowe≥ ásupply¼ ì
  87. CPU¼ ámemor∙ anΣ I/O« Sincσ it'≤ I/╧ interfacσ i≤ wel∞ structured¼ áyo⌡ ì
  88. don'⌠ áenΣ áu≡ runninτ al∞ ove≥ thσ boarΣ t∩ ge⌠ statu≤ signal≤ áa≤ áiε ì
  89. somσ othe≥ design≤ whicΦ cu⌠ cost≤ b∙ removinτ functionality.
  90.  
  91. POWER:
  92.      
  93. Thσ P├-┌ powe≥ suppl∙ i≤ divideΣ int∩ ▓ sections¼ witΦ thσ firs⌠ ábeinτ ì
  94. ß singlσ inpu⌠ requirinτ 12╓ unregulateΣ powe≥ a⌠ 40░ mß iµ thσ IB═ bu≤ ì
  95. i≤ áno⌠ iε use« Thi≤ flexibilit∙ iε inpu⌠ powe≥ mean≤ tha⌠ áthσ ásysteφ ì
  96. caε ábσ operateΣ froφ ß 12╓ vehiclσ battery¼ Gel∞ cell¼ sola≥ ácel∞ áo≥ ì
  97. whatever« áThσ áactua∞ minimuφ fo≥ powerinτ thσ P├-┌ i≤ á╕ ávolts¼ ábu⌠ ì
  98. highe≥ voltage≤ arσ preferreΣ wherσ possible.
  99.  
  100. Iµ áusσ áoµ áthσ IB═ bu≤ i≤ required¼ theε thσ 12╓ inpu⌠ áneed≤ át∩ ábσ ì
  101. connecteΣ át∩ áß á12╓ áregulateΣ powe≥ ásuppl∙ ácapablσ áoµ ádeliverinτ ì
  102. whateve≥ ápowe≥ ái≤ árequireΣ b∙ thσ P├ carΣ load¼ plu≤ á40░ áma« áwitΦ ì
  103. additiona∞ ásupplie≤ áoµ -12╓ anΣ +5V« (mos⌠ clonσ powe≥ ásupplie≤ áarσ ì
  104. significan⌠ overkil∞ fo≥ this!)
  105. èThσ á+12╓ powe≥ inpu⌠ i≤ senseΣ b∙ thσ MAX69▒ chi≡ whicΦ manage≤ árese⌠ ì
  106. anΣ áNM╔ ágeneratioε áoε ápowe≥ failure¼ áa≤ áwel∞ áa≤ áwatchdoτ átime≥ ì
  107. function≤ anΣ RA═ acces≤ control« Iµ thσ systeφ powe≥ shoulΣ fal∞ belo≈ ì
  108. 10.╡ ávolts¼ á(adjustable⌐ theε NM╔ i≤ issueΣ t∩ thσ CPU¼ anΣ áthσ áCP╒ ì
  109. execute≤ áit'≤ ápowe≥ fai∞ routines« A≤ powe≥ continue≤ át∩ áfall¼ áthσ ì
  110. MAX69▒ theε shut≤ ofµ thσ CPU'≤ acces≤ t∩ RAM¼ anΣ finall∙ issue≤ rese⌠ ì
  111. t∩ thσ CP╒ jus⌠ beforσ powe≥ die≤ completely.
  112.  
  113. Oε áthσ powe≥-u≡ side¼ thσ MAX69▒ wil∞ no⌠ allo≈ thσ CP╒ t∩ áruε áunti∞ ì
  114. thσ powe≥ inpu⌠ i≤ stable¼ anΣ ß prope≥ rese⌠ pulsσ ha≤ beeε applieΣ t∩ ì
  115. thσ CPU.
  116.  
  117. Afte≥ ápowe≥ ái≤ árestored¼ I/╧ i≤ rσ-initializeΣ t∩ áit'≤ álas⌠ áknowε ì
  118. setting≤ anΣ thσ user'≤ tasδ i≤ rσ-starteΣ wherσ i⌠ wa≤ interrupted.
  119.  
  120. ShoulΣ áthσ watchdoτ time≥ bσ iε use¼ thσ MAX69▒ wil∞ issuσ áeithe≥ áaε ì
  121. NM╔ áo≥ áß RESE╘ pulsσ t∩ thσ CP╒ wheneve≥ thσ watchdoτ átime≥ ái≤ áno⌠ ì
  122. serviceΣ properly« Thi≤ featurσ i≤ grea⌠ fo≥ BB╙ system≤ whicΦ ma∙ hanτ ì
  123. froφ timσ t∩ timσ duσ t∩ calle≥ mi≤-usσ o≥ abuse« Watchdoτ servicσ ácaε ì
  124. comσ áeithe≥ áfroφ thσ norma∞ BIO╙ interrup⌠ handling¼ o≥ áfroφ ácustoφ ì
  125. use≥ software.
  126.  
  127.  
  128.  
  129. CPU:
  130.  
  131. Thσ áP├-┌ CP╒ i≤ ß Ziloτ Z84C0▒ CMO╙ ┌-8░ CP╒ iε ß 4┤ piε PLC├ ápackagσ ì
  132. clockinτ a⌠ 1░ mhz« Thi≤ result≤ iε ß ╘-Statσ beinτ 100n≤ long¼ witΦ áß ì
  133. minimuφ instructioε cyclσ timσ oµ 400ns.
  134.  
  135. Thσ CP╒ i≤ configureΣ fo≥ bu≤ arbitratioε witΦ ou≥ futurσ ┌-28░ produc⌠ ì
  136. whicΦ áwil∞ transfe≥ informatioε t∩ thσ P├-┌ b∙ accessinτ thσ ábu≤ áanΣ ì
  137. blocδ-transferrinτ áwhateve≥ ádatß i⌠ wishe≤ directl∙ int∩ áthσ áP├-Z'≤ ì
  138. memory.
  139.  
  140. Therσ i≤ onσ specia∞ slo⌠ oε thσ mothe≥ boarΣ whicΦ i≤ intendeΣ oµ áusσ ì
  141. witΦ áthσ ┌-28░ CP╒ card¼ bu⌠ ma∙ als∩ bσ useΣ fo≥ standarΣ áI/╧ ácard≤ ì
  142. unti∞ thσ ┌-28░ i≤ available.
  143.      
  144.  
  145.  
  146. MEMORY:
  147.  
  148.                 PC-┌ MEMOR┘ MAP
  149.  
  150.     /---------------------------------------\
  151.     |                    |
  152.     |                    |
  153.     |    Upper 32K normal RAM        |
  154.     |                    |
  155.     /-----------------------\        |
  156.     |   32K    Shadowram    |        |
  157.     |                       |        |è        /---------------\       |---------------<
  158.     |        |       |        |
  159.       |        |    |        |
  160.     |  32K  EPROM   |       |  Lower 32K    |
  161.     |        |-------/  normal RAM    |
  162.     |        |            |
  163.     |        |            |
  164.     \_______________/_______________________/
  165.  
  166.  
  167.  
  168.  
  169. Thσ P├-┌ memor∙ systeφ i≤ somewha⌠ unique« I⌠ implement≤ thσ boo⌠ EPRO═ ì
  170. configuratioε áwσ áarσ áfamilia≥ witΦ froφ áthσ áAmpr∩ ásystem≤ á(amonτ ì
  171. others⌐ a≤ wel∞ a≤ bankeΣ memor∙ fo≥ systeφ data.
  172.  
  173. Al∞ áiε áall¼ thσ systeφ ha≤ acces≤ t∩ 128╦ oµ memory¼ divideΣ áa≤ á32╦ ì
  174. EPROM¼ 32╦ bankeΣ Shadowram¼ anΣ 64╦ maiε ram« Thσ RA═ chip≤ arσ á6225╢ ì
  175. 32╦ b∙ ╕ statiπ raφ a⌠ 85n≤ access.
  176.  
  177. Thσ EPRO═ i≤ ß 2725╢ devicσ fillinτ thσ lowe≥ halµ oµ thσ addres≤ spacσ ì
  178. a⌠ ápowe≥-up« Somσ codσ i≤ theε relocateΣ int∩ higΦ ram¼ anΣ thσ áEPRO═ ì
  179. i≤ áswitcheΣ áoff¼ áallowinτ thσ norma∞ 32╦ raφ bacδ áint∩ áthi≤ áspacσ ì
  180. (000░-7FFF)
  181.  
  182. Thσ EPRO═ contain≤ boo⌠-timσ code¼ thσ systeφ BIOS¼ anΣ ┌-System« áThi≤ ì
  183. allow≤ áthσ systeφ t∩ perforφ ß completσ boo⌠ froφ EPRO═ witΦ án∩ áneeΣ ì
  184. fo≥ ádisδ access« Boo⌠ timσ i≤ FAST!¼ anΣ thσ systeφ ha≤ n∩ neeΣ fo≥ áß ì
  185. "boo⌠ disk".
  186.  
  187. DiΣ yo⌡ eve≥ havσ thσ experiencσ oµ powerinτ u≡ ß ne≈ computer¼ loadinτ ì
  188. thσ ádisk¼ áanΣ watchinτ i⌠ si⌠ therσ (late≥ founΣ t∩ bσ ß ábaΣ ácable⌐ ì
  189. whilσ wonderinτ iµ i⌠ wa≤ quietl∙ lunchinτ you≥ onl∙ boo⌠ disk?
  190.  
  191.      ╔ formatteΣ ß boo⌠ disδ once¼ anΣ I'l∞ neve≥ d∩ i⌠ again!
  192.  
  193. ShoulΣ áyo⌡ desirσ t∩ ruε ß differen⌠ DOS¼ o≥ CCP¼ n∩ problem« Yo⌡ ácaε ì
  194. loaΣ áan∙ ZCP╥ 3.┤ compatiblσ systeφ segment≤ yo⌡ like¼ o≥ áß ácompletσ ì
  195. boo⌠ áimagσ áwitΦ you≥ favoritσ ┌-8░ o≥ 808░ DO╙ witΦ thσ áboo⌠ áloade≥ ì
  196. utilit∙ whicΦ place≤ you≥ ne≈ systeφ imagσ int∩ Shadowram« No≈ yo⌡ boo⌠ ì
  197. straigh⌠ áfroφ YOU╥ favoritσ system« Iµ yo⌡ shoulΣ managσ t∩ muncΦ áthσ ì
  198. imagσ áiε áraφ ásomehow¼ áyo⌡ caε stil∞ boo⌠ áthσ áEPRO═ á┌-Systeφ áanΣ ì
  199. recover.
  200.  
  201. ShoulΣ thσ systeφ acces≤ an∙ oµ thσ noε timσ-critica∞ codσ containeΣ iε ì
  202. thσ áEPROM¼ áthσ BIO╙ merel∙ swap≤ thσ EPRO═ bacδ in¼ anΣ áallow≤ átha⌠ ì
  203. codσ át∩ ábσ executed¼ swappinτ thσ EPRO═ bacδ ou⌠ wheε thσ ásysteφ án∩ ì
  204. longe≥ need≤ it.
  205.  
  206. Thσ ábankeΣ áraφ (Shadowram⌐ i≤ handleΣ iε ß simila≥ ámanne≥ áa⌠ á400░-ì
  207. BFFFH« áThσ áshadowraφ contain≤ somσ systeφ datß áincludinτ áperiphera∞ ì
  208. setu≡ áinformation¼ áanΣ ß systeφ boo⌠ image¼ a≤ wel∞ a≤ á16╦ áoµ ádisδ ì
  209. cachinτ areß whicΦ allow≤ thσ equivalen⌠ oµ tw∩ harΣ disδ track≤ t∩ ábσ ìècached.
  210.  
  211. Al∞ RA═ i≤ batter∙ backeΣ anΣ protected¼ thank≤ t∩ thσ MAX69▒ chi≡ áanΣ ì
  212. ▓ ánicaΣ o≥ alkalinσ cells« AlthougΦ Vengeancσ recommend≤ áA┴ áalkalinσ ì
  213. cells¼ áyo⌡ ma∙ usσ whateve≥ i≤ handy¼ a≤ lonτ a≤ thσ voltagσ doe≤ áno⌠ ì
  214. exceeΣ á4.5V« Tw∩ alkalinσ A┴ cell≤ wil∞ kee≡ thσ memor∙ anΣ RT├ áalivσ ì
  215. fo≥ áthσ áshelµ-lifσ áoµ áthσ batteries« á┴ áselectablσ ájumpe≥ áallow≤ ì
  216. charginτ t∩ bσ enableΣ iµ nicaΣ batterie≤ arσ t∩ bσ used« 
  217.  
  218.  
  219.  
  220. I/O:
  221.  
  222.  
  223.                PC-┌ I/╧ MA╨    
  224.  
  225.           /----------------------------\
  226.           ⁿ  0░╚  ¡  7F╚   OPE╬        |    Notσ tha⌠ I/╧ acces≤ 
  227.           ⁿ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡-ⁿ áááspeeΣ i≤ helΣ constant
  228.           ⁿ  80╚  ¡  8F╚   RT├         ⁿ    regardles≤ oµ CP╒ speed.
  229.           |----------------------------|
  230.           ⁿ  90╚  ¡  9F╚   P├ BU╙ I/╧  ⁿ    Thi≤ allow≤ fielΣ upgrades 
  231.           |----------------------------ⁿ    withou⌠ softwarσ adjustment
  232.           ⁿ  A0╚  ¡  AF╚   P├ IN╘s     ⁿ    fo≥ thσ increaseΣ speed.
  233.           |----------------------------|
  234.           ⁿ  B0╚  ¡  BF╚   P├ BU╙ ADR╙ ⁿ    Al∞ BIO╙ timinτ use≤ CTC 
  235.           |----------------------------ⁿ    driveε timσ constant≤« 
  236.           ⁿ  C0╚  ¡  CF╚   BOAR─ CTL   ⁿ    Therσ i≤ n∩ neeΣ t∩ "tweak"
  237.           |----------------------------ⁿ    systeφ softwarσ afte≥ a
  238.           ⁿ  D0╚  ¡  DF╚   SCS╔ CTR╠   ⁿ    CP╒ speeΣ upgrade!
  239.           |----------------------------|
  240.           ⁿ  E0╚  ¡  EF╚   FLOPP┘ DISK |
  241.           |----------------------------|
  242.           ⁿ  F0╚  ¡  FF╚   KI╧         ⁿ 
  243.           \----------------------------/
  244.  
  245.  
  246.  
  247. Thσ áP├-┌ ái≤ árunninτ áove≥ áwitΦ áwel∞-structureΣ áanΣ ápowerfu∞ áI/╧ ì
  248. functions.
  249.  
  250. Quickl∙ ácoverinτ áthem¼ áwσ havσ thσ KI╧ áchip¼ áprovidinτ áthσ áexac⌠ ì
  251. equivalen⌠ oµ aε SI╧-0¼ ß CTC¼ anΣ ß PI╧ iε onσ 8┤ piε PLC├ package« 
  252.  
  253. Thσ átw∩ áSI╧ áport≤ arσ configureΣ a≤ ful∞-featureΣ áseria∞ áport≤ áa⌠ ì
  254. almos⌠ an∙ bauΣ ratσ froφ 7╡ bauΣ t∩ 2Mbaud« ╔ don'⌠ kno≈ wha⌠ yo⌡ wil∞ ì
  255. talδ t∩ a⌠ ▓ megabaud¼ bu⌠ that'≤ no⌠ M┘ problem!í (joke)
  256.  
  257. AL╠ áthσ áhandshakσ ásignal≤ áarσ brough⌠ ou⌠ t∩ átw∩ á1░ ápiε áheader≤ ì
  258. allowinτ simplσ crim≡ typσ cable≤ int∩ ╣ piε ─ connector≤ resultinτ áiε ì
  259. ß ápinou⌠ whicΦ i≤ thσ samσ a≤ thσ IB═ AT« BauΣ rate≤ are¼ áoµ ácourse¼ ì
  260. individuall∙ adjustablσ anywherσ iε thi≤ range.
  261. è     ┴ helpfu∞ hint║ Breakou⌠ boxe≤ arσ USELES╙ a⌠ ▓ Megabaud!
  262.  
  263.  
  264. Tw∩ áoµ áthσ CT├ channel≤ (0,1⌐ providσ bauΣ ratσ áinformatioε át∩ áthσ ì
  265. SIOs¼ anΣ thσ remaininτ tw∩ channel≤ providσ timinτ informatioε t∩ áthσ ì
  266. systeφ anΣ thσ user« 
  267.      
  268. Channe∞ á▓ ácount≤ áthσ 4.░ Mh· inpu⌠ anΣ áprovide≤ áfractiona∞ áseconΣ ì
  269. interval≤ áát∩ áthσ áBIO╙ áfo≥ áit'≤ átiminτ áfunctions¼ ámakinτ áátheφ ì
  270. independen⌠ oµ CP╒ clock« 
  271.  
  272. Channe∞ │ count≤ "ticksó froφ thσ RTC¼ whicΦ ma∙ bσ se⌠ t∩ ▒ pe≥ seconΣ ì
  273. o≥ áonσ ápe≥ áminutσ rates¼ allowinτ precisσ ácontro∞ áoµ átimσ-relateΣ ì
  274. function≤ withou⌠ thσ bizarrσ matΦ whicΦ wa≤ formerl∙ needeΣ t∩ accoun⌠ ì
  275. fo≥ áclocδ árol∞-over« áSettinτ ß time≥ t∩ expirσ iε 6░ áminute≤ ái≤ áß ì
  276. simplσ matte≥ oµ settinτ thσ CT├ t∩ coun⌠ dowε thσ RT├ ticks.
  277.  
  278.  
  279. Thσ áPI╧ ásectioε oµ thσ KI╧ support≤ somσ boarΣ contro∞ áfunction≤ áoε ì
  280. por⌠ áB¼ anΣ ß bΘ-directiona∞ Centronic≤ paralle∞ interfacσ oε por⌠ áA« ì
  281. Thσ áparalle∞ ápor⌠ ái≤ configureΣ int∩ ß 2╢ piε áheade≥ áwhicΦ áallow≤ ì
  282. simplσ crim≡-cablσ connectioε t∩ standarΣ IB═ typσ printe≥ cables.
  283.  
  284. Sincσ I'vσ mentioneΣ i⌠ s∩ ofteε already¼ thσ RT├ i≤ aε OK╔ 6242┬ áchi≡ ì
  285. keepinτ standarΣ timσ anΣ datσ information« Thσ RT├ share≤ it'≤ batter∙ ì
  286. backu≡ witΦ thσ systeφ RAM« Thσ accurac∙ oµ thσ clocδ a≤ shippeΣ i≤ no⌠ ì
  287. guaranteed¼ ábu⌠ áma∙ bσ easil∙ adjusteΣ witΦ ß ásmal∞ áscrewdrive≥ áa≤ ì
  288. closel∙ a≤ desired.
  289.  
  290.  
  291.  
  292. DIS╦ I/O:
  293.  
  294.      
  295. Thσ P├-┌ support≤ botΦ thσ standarΣ ╡ 1/┤ incΦ drivσ interfacσ anΣ áthσ ì
  296. SCS╔ ábu≤ interface« Thσ ╡ 1/┤ incΦ interfacσ i≤ manageΣ b∙ áß áWesterε ì
  297. Digita∞ á177▓ ácontrolle≥ áanΣ áallow≤ ß maximuφ áoµ á┤ ádrive≤ át∩ ábσ ì
  298. connected.
  299.  
  300. Thσ SCS╔ bu≤ interfacσ connect≤ directl∙ t∩ sucΦ embeddeΣ drive≤ a≤ thσ ì
  301. Seagatσ 225╬ anΣ 277N¼ anΣ thσ Quantuφ anΣ Conno≥ Peripheral≤ line« áI⌠ ì
  302. ma∙ áals∩ ábσ áuseΣ witΦ MacIntosΦ drive≤ o≥ ámos⌠ áST50╢ ádrive≤ áwitΦ ì
  303. applicablσ controller≤ likσ Adaptec¼ Xebeπ anΣ s∩ forth« 
  304.  
  305. EmbeddeΣ drive≤ offe≥ thσ controlle≥ alread∙ mateΣ t∩ thσ drivσ anΣ áaε ì
  306. EXTREMEL┘ simplσ installatioε process¼ fo≥ typicall∙ $2░ morσ thaε áthσ ì
  307. samσ drivσ witΦ S╘-50╢ interface« Thσ Shugar⌠ product≤ arσ particularl∙ ì
  308. gooΣ buys¼ sincσ the∙ usσ RL╠ encodinτ oε thei≥ SCS╔ products¼ givinτ ß ì
  309. faste≥ áthroughpu⌠ áa⌠ á75░ Kby/seπ thaε thσ áST50╢ áinterfacσ áa⌠ á50░ ì
  310. Kby/sec.
  311.  
  312. Thσ SCS╔ bu≤ i≤ full∙ arbitrating¼ anΣ support≤ multiplσ CP╒ » multiplσ ì
  313. drivσ configuration≤ witΦ n∩ additiona∞ softwarσ o≥ hardwarσ othe≥ thaε ìèthσ requisitσ cables« 
  314.  
  315. Thσ áSCS╔ áinterfacσ i≤ handleΣ b∙ ß Ziloτ CMO╙ 538░ ácontrolle≥ áwhicΦ ì
  316. implement≤ thσ ful∞ SCS╔ protocol¼ anΣ ha≤ optimizeΣ bu≤ timing≤ áwhicΦ ì
  317. hel≡ increasσ thσ transfe≥ speeΣ t∩ thσ SCS╔ peripheral.
  318.  
  319.  
  320.  
  321. P├-BUS:
  322.  
  323.  
  324.      No≈ áfo≥ áthσ áboard'≤ mos⌠ interestinτ áfeature¼ áthσ áP├-A╘ ábu≤ ì
  325. interface.
  326.  
  327.  
  328. Mos⌠ áoµ yo⌡ woulΣ prefe≥ ß differen⌠ bus¼ ╔ know¼ likσ STD¼ o≥ á╙-100¼ ì
  329. o≥ maybσ Multibus« BUT║ Wheε wa≤ thσ las⌠ timσ yo⌡ sa≈ ß 240░ bauΣ áMN╨ ì
  330. compatiblσ ámodeφ fo≥ ╙-10░ bu≤ a⌠ $12╣ o≥ ß Multibu≤ cabine⌠ áa⌠ áles≤ ì
  331. thaε $900..« 
  332.  
  333. Vengeancσ áComputinτ realize≤ tha⌠ iµ therσ i≤ onσ thinτ whicΦ IB═ ácaε ì
  334. bσ honestl∙ thankeΣ for¼ i⌠ i≤ thσ adven⌠ oµ standardizeΣ anΣ CHEA╨ I/╧ ì
  335. card≤ anΣ cabinets« Thi≤ playeΣ ß majo≥ par⌠ iε thσ desigε oµ thσ P├-Z.
  336.  
  337.  
  338. IB═ I/╧ card≤ arσ mappeΣ int∩ thσ ┌-80'≤ I/╧ addres≤ spacσ iε ß 1╢ por⌠ ì
  339. "window"« áThi≤ á"windowó point≤ t∩ an∙ poin⌠ iε thσ PC'≤ áI/╧ áaddres≤ ì
  340. spacσ áfroφ á00░ t∩ FFFΦ b∙ thσ usσ oµ thσ "Fakσ Addres≤ áLatchó áwhicΦ ì
  341. latche≤ áthσ uppe≥ tw∩ nybble≤ oµ thσ address¼ witΦ thσ ábottoφ ánybblσ ì
  342. beinτ supplieΣ b∙ thσ ┌-80.
  343.  
  344.      Example║ T∩ addres≤ ß P├ modeφ a⌠ COM1:
  345.  
  346.  
  347.      P├ CO═ assignment≤ arσ mappeΣ a≤ follows:
  348.  
  349.      COM▒ ╜ 3F8Φ    COM▓ ╜ 2F8Φ    COM│ ╜ 3E8Φ   anΣ   COM┤ ╜ 2E8h
  350.  
  351.      Therσ arσ additiona∞ port≤ CO═ ╡-╕ bu⌠ the∙ arσ no⌠ standardized.
  352.  
  353.  
  354. So¼ t∩ acces≤ thσ P├ modeφ a⌠ COM▒ o≥ 3F8h¼ wσ simpl∙ writσ 3╞ int∩ thσ ì
  355. Fakσ Addres≤ Latch¼ anΣ theε reaΣ o≥ writσ a≤ desireΣ t∩ 98Φ (9╪ i≤ thσ ì
  356. locatioε oµ thσ P├ I/╧ window).
  357.  
  358. IB═ áinterrupt≤ áanΣ thσ CHC╦ inpu⌠ arσ handleΣ througΦ aε ╕ ábi⌠ ápor⌠ ì
  359. whicΦ áallow≤ thσ fron⌠ pane∞ keyswitch¼ IRQ▓-╖ anΣ CHC╦ át∩ áinterrup⌠ ì
  360. thσ CPU« Thσ interrup⌠ routinσ simpl∙ read≤ thσ PCIN╘ por⌠ t∩ determinσ ì
  361. thσ interruptinτ device.
  362.  
  363. Thi≤ structurσ result≤ iε ß fairl∙ simplσ interfacσ int∩ P├ I/O« á NOT┼ ì
  364. tha⌠ ámemor∙ ácard≤ áCANNO╘ bσ useΣ witΦ thσ P├-Z« Whilσ áthe∙ áma∙ ábσ ì
  365. pluggeΣ áint∩ thσ bus¼ the∙ arσ no⌠ accessible« Thσ ┌-28░ produc⌠ áwil∞ ìèallo≈ theφ t∩ bσ used¼ bu⌠ fo≥ no≈ yo⌡ wil∞ havσ t∩ bσ conten⌠ witΦ thσ ì
  366. hundred≤ oµ I/╧ interfacσ card≤ tha⌠ arσ available.
  367.  
  368.  
  369. Wheε thσ systeφ i≤ shipped¼ i⌠ wil∞ comσ witΦ overlay≤ anΣ insert≤ áfo≥ ì
  370. MEX¼ áIMP¼ áBY┼ anΣ YABBA╘ whicΦ i≤ ß áFid∩-compatiblσ ánetmai∞ ásysteφ ì
  371. authoreΣ b∙ Jacδ Winslade« Yo⌡ wil∞ bσ ablσ t∩ se⌠ u≡ you≥ owε ánetmai∞ ì
  372. nodσ áwithiε ß couplσ oµ hour≤ oµ openinτ thσ boxí Aren'⌠ yo⌡ tireΣ áoµ ì
  373. havinτ t∩ cal∞ 1▓ differen⌠ board≤ arounΣ thσ countr∙ t∩ sta∙ iε touch┐ ì
  374. ╔ surσ am!
  375.  
  376.  
  377. ┴ áfina∞ notσ witΦ regard≤ t∩ software║ Wσ a⌠ Vengeancσ believσ iε áthσ ì
  378. Hacke≥ Ethic« 
  379.  
  380. AlthougΦ áwσ arσ NO╘ licensinτ yo⌡ t∩ usσ ou≥ softwarσ t∩ competσ áwitΦ ì
  381. u≤ áiε ámanufacturinτ anΣ sellinτ computers¼ wσ wil∞ ámakσ áou≥ ásysteφ ì
  382. sourcσ codσ availablσ t∩ ANYONE¼ regardles≤ oµ whethe≥ the∙ owε ß áP├-┌ ì
  383. o≥ not« 
  384.  
  385. Yo⌡ áarσ áfreσ át∩ usσ thi≤ sourcσ codσ át∩ ádevelo≡ áapplication≤ áanΣ ì
  386. system≤ áfo≥ áthσ P├-Z¼ anΣ t∩ sel∞ thosσ application≤ anΣ ásystem≤ át∩ ì
  387. you≥ ácustomer≤ withou⌠ royalt∙ t∩ Vengeancσ Computing¼ a≤ lonτ a≤ áthσ ì
  388. hardwarσ platforφ i≤ thσ P├-Z.
  389.  
  390. A≤ i⌠ become≤ available¼ yo⌡ wil∞ finΣ sourcσ codσ fo≥ thσ systeφ áBIO╙ ì
  391. anΣ áutilities¼ áBOO╘ EPROM¼ anΣ an∙ overlay≤ o≥ insert≤ tha⌠ áwσ áhavσ ì
  392. writteε áoε thσ Vengeancσ Computinτ BB╙ a⌠ (714⌐ 54╢-5407¼ anΣ áoε áthσ ì
  393. systeφ disk≤ shippeΣ witΦ you≥ ne≈ P├-┌ computer.
  394.  
  395. Use≥-contributeΣ ááinterface≤ áanΣ áapplication≤ áwil∞ áals∩ ábσ áámadσ ì
  396. availablσ thσ samσ way.
  397.  
  398.      
  399.      Wσ WAN╘ yo⌡ t∩ ge⌠ iε iε unde≥ thσ hood!
  400.  
  401.      
  402. ╔ áthinδ áwe'vσ covereΣ thσ wholσ machinσ a⌠ thi≤ ápoint« áSoftwarσ ái≤ ì
  403. anothe≥ matter¼ anΣ duσ t∩ timσ requirements¼ wσ wil∞ havσ t∩ makσ tha⌠ ì
  404. anothe≥ article« (Actually¼ wσ arσ stil∞ workinτ oε it¼ anΣ rathe≥ thaε ì
  405. havσ áyo⌡ ge⌠ m∙ halµ-bakeΣ ideas¼ I'Σ rathe≥ unti∞ wai⌠ m∙ áidea≤ áarσ ì
  406. close≥ t∩ wel∞-done!)
  407.  
  408.  
  409. It'≤ ver∙ difficul⌠ t∩ conve∙ thσ magiπ oµ thi≤ machinσ iε ß tex⌠ file« ì
  410. Thσ áP├-┌ ái≤ ß fast¼ cleaε machine¼ witΦ ß ful∞ complemen⌠ áoµ ásysteφ ì
  411. suppor⌠ áfeature≤ áwel∞ áintegrateΣ a⌠ botΦ áthσ ásysteφ áhardwarσ áanΣ ì
  412. softwarσ levels« Thσ wholσ machinσ i≤ regula≥ anΣ wel∞ structured¼ áanΣ ì
  413. ver∙ eas∙ t∩ codσ for« 
  414.  
  415. Othe≥ ácomputer≤ ma∙ havσ simila≥ feature≤ available¼ bu⌠ nonσ oµ átheφ ì
  416. provide≤ áal∞ áthesσ áfeature≤ áoε thσ ámotherboarΣ áiε áaε áintegrateΣ ì
  417. package« Conside≥ tha⌠ iε thσ standarΣ PC¼ thesσ feature≤ woulΣ áoccup∙ ìèa≤ áman∙ áa≤ ╡ oµ thσ expansioε slotsí Eveε a⌠ that¼ áthσ áP├-┌ áoffer≤ ì
  418. feature≤ álikσ it'≤ powe≥ tolerancσ circuitr∙ anΣ softwarσ átha⌠ áisn'⌠ ì
  419. availablσ oε ß P├ a⌠ an∙ price!
  420.  
  421. Wha⌠ morσ caε ╔ say┐ ╔ firml∙ believσ tha⌠ thσ P├-┌ represent≤ thσ bes⌠ ì
  422. enginσ iε it'≤ clas≤ anΣ tha⌠ i⌠ i≤ implementeΣ witΦ thσ bes⌠ ásoftwarσ ì
  423. suppor⌠ possible.
  424.  
  425.  
  426.      Thσ P├-┌ i≤ availablσ froφ Vengeancσ Computinτ a⌠ 
  427.  
  428.  
  429.                Vengeance Computing INC
  430.                PO BOX 15023 Industrial Station
  431.                Santa Ana Ca. 92705-0023
  432.  
  433.  
  434.  
  435.          (714⌐ 991-244▒ Voice¼  (714⌐ 546-540╖ BBS
  436.  
  437.      Pricσ i≤ $55░ (PC-┌ -1░ witΦ Z-System softwarσ anΣ manuals.)
  438.  
  439.  
  440.  
  441.