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1563
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1 From: Pete_Lyall (pete@wlbreng1.UUCP)
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2 Subject: COCO OS9 2.00.00 bugs
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3 Newsgroups: net.micro.6809
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4 Date: 1986-07-03 09:43:11 PST
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5
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6 COCO OS9 2.00.00 BUGS LIST
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7 ===========================
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8
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9 As with the 2.00.00 CCio patch, I'm merely passing this on to those that
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10 are interested. Pete Lyall
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11
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12
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13
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14 Description of bugs (and most fixes) in CoCo OS9 ver 2.00.00:
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15 From Kevin Darling and Kent Meyers. 08 Apr 86, rev: 13 Jun 86
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16 (Be sure to re-verify a module after a change)
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17 ------------------------------------
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18
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19 MODULE: RS232
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20 PROBLEM: Returns no error for bad type mode.
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21 SPECIFICS: Original src missing '#' for 'ldb #E$BMode'. Causes B reg to be
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22 loaded from $00CB, which is normally = $00.
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23 SOLUTION: Change byte at offset $0180 from $D6 to $C6.
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24
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25 MODULE: CCHDisk
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26 PROBLEM: Returns no error on write verification failure.
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27 SPECIFICS: Similiar to RS232 bug above, for E$Write.
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28 SOLUTION: Change byte at offset $00FC from $D6 to $C6.
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29
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30 MODULE: Clock
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31 PROBLEM: Day increments by two at midnite.
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32 SPECIFICS: Result of 'fix' to 1.XX bug. Extra increment intended for Feb 28
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33 hits all days instead.
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34 SOLUTION: Several patches in DL, including 'Official Tandy Patch', which also
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35 fixes Virq bug. Or use the following short patch from ??: (and re-verify
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36 module)
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37 Offset Old New
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38 001A 00 1D
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39 001C 1D 1C
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40 0057 08 09
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41 005A 27 C4
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42 005B 04 03
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43 005C C4 26
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44 005E 27 5F
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45 005F 01 20
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46 0060 4C 02
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47
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48 MODULE: Clock
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49 PROBLEM: Undo F$Virq call fails.
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50 SPECIFICS: When a call is made to delete a F$Virq entry, the X register is
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51 pointed to a stack address, instead of loading X with the virq register entry
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52 off the stack.
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53 SOLUTION: Change byte at offset $0119 from $30 to $AE.
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54
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55 MODULE: IOMan
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56 PROBLEM: F$IOQU code mistake.
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57 SPECIFICS: Major code change in IOMan. Idea was to sort queuing processes by
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58 age. Wrong register used for comparison.
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59 SOLUTION: Change the following bytes:
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60 Offset Old New
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61 06BB 10 12
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62 06BC A3 E1
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63
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64 MODULE: OS9p2
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65 PROBLEM: F$UnLink does not terminate devices.
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66 SPECIFICS: Unlink of a filemgr, driver or desc, that is NOT in tbe bootfile
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67 but is in use, should return E$ModBsy error from a internal UnLink call to
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68 F$IODel. A wrong register was used, and a loaded mgr, driver, or desc module's
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69 space will be returned to the free mem pool.
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70 SOLUTI.dON: None at this time to fit within module. Hang on.
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71
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72 MODULE: CCIO
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73 PROBLEM: Failure to recognize CoCo keyboard Break keys.
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74 SPECIFICS: Because the order of IRQ was changed so that CCIO keyboard check
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75 follows Clock, the DP reg is set to $00. The Break or Shift-Break keys (signals
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76 2 and 3) sent to processes while in OS9 non-system state are ignored (the
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77 internal keyboard should've been an IRQ or VIRQ device). The bug will appear if
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78 the receiving program (Basic09 or otherwise) does not do much output, such as
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79 math routines, or using Inkey.
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80 SOLUTION: Use CCIOP files elsewhere in DL. Or instead, if doing a lot of
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81 internal processing, send a char to the screen within loops. This will increase
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82 the chance OS9 will be in a system state and will correctly handle the Break
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83 Sends.
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84
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85 MODULE: CCIO, CO80, CO32
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86 PROBLEM: Co-module terminate routines not called, etc.
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87 SPECIFICS: Termination of CCIO does not result in a call to codrivers'
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88 termination code. Worse, once you do a 'tmode type=xx' and change video
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89 codrivers, CCIO will still believe the other one is in memory. If it was NOT in
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90 the bootfile, a crash may result.
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91 SOLUTION: Until rewrite of CCIO - NEVER change to a different COXX, unlink the
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92 loaded one, then 'tmode type' back to the first. Instead of loading it from the
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93 exec directory, CCIO will jump into never-never land, if that space has been
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94 reused.
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95
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96 MODULE: ACIAPAK
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97 PROBLEM: Not fully reentrant.
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98 SPECIFICS: Each new incarnation saves current D.Firq vector; that vector
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99 restored upon termination. Use of this driver for more than one FIRQ device,
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100 and terminating their use in wrong order could result in FIRQ's going to bad
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101 address.
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102 SOLUTION: None yet. Perhaps driver was not intended to be used for more than
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103 one FIRQ device. Should be in docs. Decent solution would be for Clock or OS9
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104 or separate module to change firq's to irq's, instead of ACIAPAK.
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105
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106 ----------------------------------
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107 Other 'bugs' and things of interest:
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108
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109 MODULE: Unknown (?)
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110 PROBLEM: Machine locks up after using a new OS9Boot.
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111 SPECIFICS: Unfound bug. Programs fail. Drives continue to run.
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112 SOLUTION: Change order of OS9gen bootlist.
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113
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114 MODULE: CCIO
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115 PROBLEM: Incompatibility with previous escape code drivers.
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116 SPECIFICS: New CCIO shunts all <esc> ($1B) (27) codes to GRFO module. This
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117 means original Wordpak software (Dynastar and Stylo for example) won't work.
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118 SOLUTION: See C82KD.DOC in DL6. If you don't need OPak c&
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119 .YYCO80 drivers
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120 by Bill Dickhaus or Rick Johnson in DL6.
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121
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122 MODULE: PRINTER
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123 PROBLEM: Delay for 'printer ready' too short for some devices.
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124 Sorry, don't have details now. I think Bernie Pluth and others may have a
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125 solution.
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126
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127 ----------------------
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128 Differences of interest:
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129
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130 : Be careful using old Password files. Sysgo 2.0 sets default startup priority
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131 at 128, vs 1.XX's 0. If login seems very sluggish, check your SYS/Password
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132 parameters.
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133
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134 : ACIAPAK 2.0 always assumes FIRQ device in first MPI slot. To use RS232 pak,
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135 etc in another slot, change the byte at offset $0080 (or $007F?) in ACIAPAK
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136 from 03 to:
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137 SLOT BYTE
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138 1 03
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139 2 13
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140 3 23
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141 4 -- Floppy controller slot
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142 ----------------------
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143 END OF FILE
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