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Text File  |  1991-01-21  |  4KB  |  106 lines
  1.       DBGRAF - Graphics generator for DBASE II
  2.  
  3.                   on the Osborne 1
  4.  
  5.                          by
  6.  
  7.                   David A. Basskin
  8.                  42 Charles St. E.,
  9.                  Toronto, Ontario,
  10.                    Canada M4Y 1T5
  11.  
  12. ----------------------------------------------------
  13.  
  14. Copyright (c) 1983 by David A. Basskin
  15.  
  16. UnlimiteΣ freσ usσ anΣ reproductioε oµ thi≤ tex⌠ anΣ ì
  17. thσá program≤ associateΣ witΦ i⌠ arσ hereb∙á granteΣ ì
  18. t∩ al∞ user≤ provideΣ tha⌠ n∩ chargσ o≥ lev∙ i≤ madσ ì
  19. fo≥ thσ use¼ copyinτ o≥ operatioε thereof« Thσ righ⌠ ì
  20. t∩ sel∞ thi≤ tex⌠ o≥ an∙ oµ thσ program≤á associateΣ ì
  21. therewitΦá i≤á expressl∙ no⌠ granteΣ t∩ an∙á person¼ ì
  22. firm or corporation.
  23.  
  24. ----------------------------------------------------
  25.  
  26. Iµá you'rσ onσ oµ thσ man∙ wh∩ receiveΣ ß freσá cop∙ ì
  27. oµ dBasσ I╔ witΦ you≥ Osborne¼ yo⌡ ma∙ havσ wondereΣ ì
  28. ho≈á t∩á g∩ abou⌠ usinτ thσ graphic≤á capabilit∙á oµ ì
  29. you≥ computer« ┴ featurσ no⌠ documenteΣ iε thσ dBasσ ì
  30. maua∞á i≤ thσ POK┼ command¼á whicΦ doe≤ thσ samσ joΓ ì
  31. anΣ work≤ thσ samσ wa∙ a≤ tha⌠ commanΣ iε BASIC« Al∞ ì
  32. yo⌡ d∩ i≤ i≤ issuσ froφ withiε ß dBasσ commanΣá filσ ì
  33. thσ command
  34.  
  35.             POKE <LOCATION>,<CHARACTER>
  36.  
  37. anΣá tha⌠ characte≥ wil∞ appea≥ oε thσá screen«á Thσ ì
  38. location≤ fo≥ thσ visiblσ screeε oε thσ 5▓ characte≥ ì
  39. screeεá oεá thσ unmodifieΣ Osbornσ (u≡ t∩á re÷á 1.4⌐ ì
  40. are:
  41.  
  42.     Upper left:  61440
  43.     Upper right: 61491
  44.     Lower left:  64384
  45.     Lower right: 64435
  46.  
  47. Yo⌡ caε hi⌠ an∙ locatioε oε thσ 2┤ b∙ 5▓ screeε ver∙ ì
  48. simpl∙á b∙á rememberinτá tha⌠á althougΦá thσá screeε ì
  49. appear≤ t∩ bσ 5▓ character≤ wide¼ i⌠ i≤ actuall∙ 12╕ ì
  50. character≤á iε width«á Thu≤ thσ leftmos⌠ locatioε oε ì
  51. thσ seconΣ visiblσ linσ woulΣ bσ 6156╕ (i.e.¼á 6144░ ì
  52. ½á 128)«á ╔ d∩ no⌠ havσ aε Osbornσ witΦá thσá screeε ì
  53. modificatioεá added¼á s∩á ╔á can'⌠ sa∙á whethe≥á thσ ì
  54. addressinτá work≤á iε precisel∙á thσá samσá fashion¼ ì
  55. althougΦá thσá principlσá woulΣá bσá thσá same«á An∙ ì
  56. Osbornσá user≤á witΦá thσá screeεá upgradσá wh∩á caε ì
  57. advise me on this will be appreciated.
  58.  
  59. Now¼á thσá questioε oµ characters«á Yo⌡ caε usσá thσ ì
  60. completσá characte≥ set¼á althougΦ POKEinτá anythinτ ì
  61. bu⌠á thσá graphic≤ character≤ i≤ reall∙ ßá wastσá oµ ì
  62. timσá iε dBase¼á giveε thσ powe≥ oµ thσ "└ x,∙á SAYó ì
  63. commanΣá wherσá ° anΣ ∙ arσ horizonta∞ anΣá vertica∞ ì
  64. screeεá coordinate≤ respectively«
  65.  
  66. Ho≈ caε yo⌡ finΣ ou⌠ whicΦ arσ thσ characters┐á I'vσ ì
  67. provideΣá ß simplσ characte≥ generator¼á CHARGEN.CM─ ì
  68. whicΦá i≤ read∙ t∩ ruε oε you≥ Osbornσ unde≥á dBase« ì
  69. Yo⌡ caε pu⌠ thσ displa∙ oε holΣ iε thσ usua∞ manner¼ ì
  70. b∙ typinτ control-S« You'l∞ sooε finΣ tha⌠ thσ firs⌠ ì
  71. 3▓á character≤ - thσ graphic≤ character≤á - arσá thσ ì
  72. onl∙á one≤ you'rσ interesteΣ iε fo≥ thesσá purposes¼ ì
  73. bu⌠á I'vσ se⌠ i⌠ t∩ generatσ thσ wholσ characte≥ se⌠ ì
  74. iµ yo⌡ haven'⌠ pokeΣ int∩ thσ innard≤ oµ thσ Osbornσ ì
  75. enougΦ t∩ seσ theφ yet.
  76.  
  77. Finally¼ ╔ havσ provideΣ ß screeε prograφ tha⌠ draw≤ ì
  78. ß bo° withiε thσ 2┤ b∙ 5▓ frame¼ DRAWBOX.CMD« Iµ yo⌡ ì
  79. examinσ thσ codσ fo≥ thi≤ you'l∞ ge⌠ thσ ideß oµ ho≈ ì
  80. yo⌡á caεá usσá ßá variablσá namσá fo≥á thσá locatioε ì
  81. paramete≥á oµá thσ POK┼ commanΣá t∩á addres≤á screeε ì
  82. locations in sequence.
  83.  
  84. Wil∞ thi≤ makσ you≥ program≤ morσ effective┐ Wil∞ i⌠ ì
  85. hel≡ brinτ peace┐ Lowe≥ thσ pricσ oµ bread┐ FeeΣ thσ ì
  86. hungry┐á Wh∩á knows┐á Al∞ ╔ caε sa∙ i≤ havσ fuε witΦ ì
  87. it«á ╔á hopσ i⌠ help≤ yo⌡ learε somethinτ abou⌠á thσ ì
  88. Osborne and dBase II.
  89.  
  90. An∙ suggestions¼á comments¼á idea≤ o≥ reactioε woulΣ ì
  91. bσ ver∙ mucΦ appreciated«á ┴ messagσ caε bσ lef⌠ fo≥ ì
  92. mσ oε thi≤ systeφ (RCP═ #1¼á Toronto⌐ o≥ sen⌠ t∩ thσ ì
  93. abovσ address«á M∙ homσ numbe≥ i≤ 368-1085¼á iµá yo⌡ ì
  94. want to call me.
  95.  
  96. David A. Basskin
  97.  
  98. July 13, 1983
  99.  
  100. ----------------------------------------------------
  101.  
  102. Osborne is a trademark of the Osborne Computer Corp.
  103.  
  104. dBase II is a trademark of Ashton-Tate Inc.
  105.  
  106. ----------------------------------------------------