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37
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1 ********************************************************************
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2 * SysGo - Kickstart program module
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3 *
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4 * $Id$
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5 *
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6 * Edt/Rev YYYY/MM/DD Modified by
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7 * Comment
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8 * ------------------------------------------------------------------
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9 * 5 1998/10/12 Boisy G. Pitre
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10 * Taken from OS-9 L2 Tandy distribution and modified banner for V3.
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11 *
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12 * 5r2 2003/01/08 Boisy G. Pitre
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13 * Fixed fork behavior so that if 'shell startup' fails, system doesn't
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14 * jmp to Crash, but tries AutoEx instead. Also changed /DD back to /H0
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15 * for certain boot floppy cases.
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16 *
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17 * 2003/09/04 Boisy G. Pitre
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18 * Back-ported to OS-9 Level One.
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19 *
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20 * 5r3 2003/12/14 Boisy G. Pitre
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21 * Added SHIFT key check to prevent startup/autoex from starting if
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22 * held down. Gene Heskett, this Bud's for you.
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23
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24 nam SysGo
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25 ttl Kickstart program module
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26
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27 IFP1
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28 use defsfile
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29 ENDC
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30
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31 tylg set Prgrm+Objct
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32 atrv set ReEnt+rev
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33 rev set $03
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34 edition set $05
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35
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36 mod eom,name,tylg,atrv,start,size
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37
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38
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39 org 0
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40 InitAddr rmb 2
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41 rmb 250
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42 size equ .
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43
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44 name fcs /SysGo/
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45 fcb edition
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46
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47 * Default process priority
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48 DefPrior set 128
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49
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50 Banner equ *
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51 fcc /(C) 2014 The NitrOS-9 Project/
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52 CrRtn fcb C$CR,C$LF
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53
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54 IFEQ ROM
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55 IFNE NOS9DBG
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56 fcc "** DEVELOPMENT BUILD **"
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57 fcb C$CR,C$LF
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58 fcc "** NOT FOR DISTRIBUTION! **"
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59 fcb C$CR,C$LF
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60 ENDC
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61 * dts
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62 fcb C$CR,C$LF
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63 fcc !http://www.nitros9.org!
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64 fcb C$CR,C$LF
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65 ENDC
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66
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67 fcb C$LF
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68 BannLen equ *-Banner
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69
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70 IFEQ ROM
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71 DefDev equ *
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72 fcc "/D0"
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73 * IFNE DD
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74 * fcc "/DD"
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75 * ELSE
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76 * fcc "/H0"
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77 * ENDC
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78 fcb C$CR
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79 HDDev equ *
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80 fcc "/DD"
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81 * IFNE DD
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82 * fcc "/DD/"
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83 * ELSE
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84 * fcc "/H0/"
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85 * ENDC
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86 ExecDir fcc "/D0/CMDS"
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87 fcb C$CR
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88 ENDC
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89
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90 Shell fcc "Shell"
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91 fcb C$CR
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92 AutoEx fcc "AutoEx"
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93 fcb C$CR
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94 AutoExPr fcc ""
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95 fcb C$CR
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96 AutoExPrL equ *-AutoExPr
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97
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98 IFEQ ROM
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99 Startup fcc "startup -p"
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100 fcb C$CR
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101 StartupL equ *-Startup
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102 ENDC
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103
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104 ShellPrm equ *
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105 IFGT Level-1
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106 fcc "i=/1"
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107 ENDC
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108 CRtn fcb C$CR
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109 ShellPL equ *-ShellPrm
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110
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111 mdirprm fcc "-e"
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112 fcb C$CR
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113
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114 * Default time packet
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115 DefTime
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116 * dtb
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117
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118 IFEQ atari+corsham
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119 IFEQ Level-1
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120 * BASIC reset code (CoCo port only)
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121 * BasicRst fcb $55
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122 * neg <$0074
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123 * nop
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124 * clr >PIA0Base+3
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125 * nop
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126 * nop
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127 * sta >$FFDF turn off ROM mode
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128 * jmp >Bt.Start+2 jump to boot
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129 * BasicRL equ *-BasicRst
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130 ENDC
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131 ENDC
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132
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133 Init fcs /Init/
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134
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135 * Entry: X = pointer to start of nul terminated string
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136 * Exit: D = length of string
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137 strlen pshs x
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138 ldd #-1
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139 go@ addd #$0001
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140 tst ,x+
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141 bne go@
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142 puls x,pc
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143
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144 * Display carriage-return/line-feed.
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145 WriteCR pshs y
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146 leax CrRtn,pcr
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147 ldy #$0001
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148 os9 I$WritLn
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149 puls y,pc
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150
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151 **********************************************************
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152 * SysGo Entry Point
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153 **********************************************************
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154 start leax >IcptRtn,pcr
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155 os9 F$Icpt
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156 * Set priority of this process
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157 os9 F$ID
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158 ldb #DefPrior
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159 os9 F$SPrior
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160
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161 * Write OS name and Machine name strings
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162 leax Init,pcr
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163 clra
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164 pshs u
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165 os9 F$Link
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166 bcs SignOn
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167 stx <InitAddr
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168 ldd OSName,u point to OS name in INIT module
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169 leax d,u point to install name in INIT module
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170 bsr strlen
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171 tfr d,y
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172 lda #$01
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173 os9 I$Write
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174 bsr WriteCR
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175 ldd InstallName,u
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176 leax d,u point to install name in INIT module
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177 bsr strlen
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178 tfr d,y
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179 lda #$01
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180 os9 I$Write
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181 bsr WriteCR
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182
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183 * Show rest of banner
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184 SignOn
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185 puls u
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186 leax >Banner,pcr
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187 ldy #BannLen
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188 lda #$01 standard output
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189 os9 I$Write write out banner
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190
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191 * Set default time
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192 * leax >DefTime,pcr
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193 * os9 F$STime set time to default
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194
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195 IFEQ ROM
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196 * Change EXEC and DATA dirs
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197 leax >ExecDir,pcr
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198 lda #EXEC.
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199 os9 I$ChgDir change exec. dir
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200 leax >DefDev,pcr
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201 * Made READ. so that no write occurs at boot (Boisy on Feb 5, 2012)
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202 lda #READ.
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203 os9 I$ChgDir change data dir.
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204 bcs L0125
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205 leax >HDDev,pcr
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206 lda #EXEC.
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207 os9 I$ChgDir change exec. dir to HD
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208 ENDC
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209
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210 L0125 equ *
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211 pshs u,y
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212 IFEQ atari+corsham
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213 IFEQ Level-1
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214 * Setup BASIC code (CoCo port only)
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215 * leax >BasicRst,pcr
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216 * ldu #D.CBStrt
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217 * ldb #BasicRL
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218 *CopyLoop lda ,x+
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219 * sta ,u+
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220 * decb
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221 * bne CopyLoop
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222 ELSE
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223 os9 F$ID get process ID
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224 lbcs L01A9 fail
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225 leax ,u
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226 os9 F$GPrDsc get process descriptor copy
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227 lbcs L01A9 fail
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228 leay ,u
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229 ldx #$0000
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230 ldb #$01
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231 os9 F$MapBlk
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232 bcs L01A9
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233
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234 * lda #$55 set flag for Color BASIC
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235 * sta <D.CBStrt,u
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236 * Copy our default I/O ptrs to the system process
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237 ldd <D.SysPrc,u
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238 leau d,u
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239 leau <P$DIO,u
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240 leay <P$DIO,y
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241 ldb #DefIOSiz-1
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242 L0151 lda b,y
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243 sta b,u
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244 decb
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245 bpl L0151
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246 ENDC
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247 ENDC
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248 *
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249 * IFEQ ROM
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250 * Fork shell startup here
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251 * IFEQ atari+corsham
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252 * Added 12/14/03: If SHIFT is held down, startup is not run (CoCo only)
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253 * lda #$01 standard output
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254 * ldb #SS.KySns
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255 * os9 I$GetStt
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256 * bcs DoStartup
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257 * bita #SHIFTBIT SHIFT key down?
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258 * bne L0186 Yes, don't to startup or autoex
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259 * ENDC
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260
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261 *DoStartup leax >Shell,pcr
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262 * leau >Startup,pcr
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263 * ldd #256
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264 * ldy #StartupL
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265 * os9 F$Fork
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266 * bcs DoAuto Startup failed..
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267 * os9 F$Wait
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268 * ENDC
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269
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270 * Fork AutoEx here
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271 *DoAuto leax >AutoEx,pcr
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272 * leau >CRtn,pcr
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273 * ldd #$0100
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274 * ldy #$0001
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275 * os9 F$Fork
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276 * bcs L0186 AutoEx failed..
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277 * os9 F$Wait
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278
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279 IFEQ Level-1
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280 leax >MDIR,pcr
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281 leau >mdirprm,pcr
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282 ldd #$0100
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283 ldy #$0003
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284 os9 F$Fork
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285 bcs L0186 AutoEx failed..
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286 os9 F$Wait
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287 bra L0186
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288 MDIR fcs "mdir"
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289 fcb $0d
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290 ENDC
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291 L0186 equ *
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292 puls u,y
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293 FrkShell leax >ShellPrm,pcr
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294 leay ,u
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295 ldb #ShellPL
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296 L0190 lda ,x+
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297 sta ,y+
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298 decb
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299 bne L0190
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300 * Fork final shell here
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301 leax >Shell,pcr
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302 lda #$01 D = 256 (B already 0 from above)
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303 ldy #ShellPL
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304 IFGT Level-1
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305 os9 F$Chain Level 2/3. Should not return..
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306 ldb #$06 it did! Fatal. Load error code
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307 bra Crash
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308
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309 L01A9 ldb #$04 error code
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310 Crash clr >DPort+$08 turn off disk motor
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311 jmp <D.Crash fatal error
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312 ELSE
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313 os9 F$Fork Level 1.
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314 bcs DeadEnd Fatal.
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315 os9 F$Wait
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316 bcc FrkShell OK, go start shell.
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317 DeadEnd bra DeadEnd
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318 ENDC
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319
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320 IcptRtn rti
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321
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322 emod
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323 eom equ *
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324 end
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