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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 "/V0"
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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$CR
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79 HDDev equ *
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80 fcc "/V0"
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81 * IFNE DD
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82 * fcc "/DD/"
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83 * ELSE
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84 * fcc "/H0/"
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85 * ENDC
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86 ExecDir fcc "/V0/CMDS"
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87 fcb C$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 * Default time packet
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112 DefTime
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113 fcb 0
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114 fcb 0
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115 fcb 0
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116 fcb 0
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117 fcb 0
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118 fcb 0
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119 fcb 0
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120 fcb 0
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121 fcb 0
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122 * dtb
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123
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124 IFEQ atari+corsham
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125 IFEQ Level-1
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126 * BASIC reset code (CoCo port only)
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127 * BasicRst fcb $55
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128 * neg <$0074
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129 * nop
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130 * clr >PIA0Base+3
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131 * nop
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132 * nop
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133 * sta >$FFDF turn off ROM mode
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134 * jmp >Bt.Start+2 jump to boot
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135 * BasicRL equ *-BasicRst
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136 ENDC
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137 ENDC
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138
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139 Init fcs /Init/
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140
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141 * Entry: X = pointer to start of nul terminated string
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142 * Exit: D = length of string
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143 strlen pshs x
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144 ldd #-1
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145 go@ addd #$0001
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146 tst ,x+
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147 bne go@
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148 puls x,pc
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149
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150 * Display carriage-return/line-feed.
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151 WriteCR pshs y
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152 leax CrRtn,pcr
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153 ldy #$0001
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154 os9 I$WritLn
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155 puls y,pc
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156
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157 **********************************************************
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158 * SysGo Entry Point
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159 **********************************************************
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160 start leax >IcptRtn,pcr
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161 os9 F$Icpt
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162 * Set priority of this process
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163 os9 F$ID
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164 ldb #DefPrior
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165 os9 F$SPrior
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166
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167 * Write OS name and Machine name strings
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168 leax Init,pcr
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169 clra
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170 pshs u
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171 os9 F$Link
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172 bcs SignOn
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173 stx <InitAddr
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174 ldd OSName,u point to OS name in INIT module
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175 leax d,u point to install name in INIT module
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176 bsr strlen
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177 tfr d,y
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178 lda #$01
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179 os9 I$Write
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180 bsr WriteCR
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181 ldd InstallName,u
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182 leax d,u point to install name in INIT module
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183 bsr strlen
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184 tfr d,y
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185 lda #$01
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186 os9 I$Write
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187 bsr WriteCR
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188
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189 * Show rest of banner
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190 SignOn
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191 ldu ,s
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192 leax >Banner,pcr
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193 ldy #BannLen
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194 lda #$01 standard output
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195 os9 I$Write write out banner
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196
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56
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197 * Set default time and start Clock module
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198 leax >DefTime,pcr
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199 os9 F$STime set time to default
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200
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201 IFEQ 1
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202 leax >MDIR,pcr
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203 leau >mdirprm,pcr
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204 ldd #$0100
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205 ldy #$0003
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206 os9 F$Fork
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207 bcs mdirend AutoEx failed..
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208 os9 F$Wait
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209 ldu ,s
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210 bra mdirend
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211 MDIR fcc "mdir"
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212 fcb $0d
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213 mdirprm fcc "-e"
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214 fcb C$CR
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215 mdirend
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216 ldu ,s
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217 ENDC
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218
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219 * IFEQ ROM
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220 * Change EXEC and DATA dirs
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221 leax >ExecDir,pcr
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222 lda #EXEC.
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223 os9 I$ChgDir change exec. dir
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224 leax >DefDev,pcr
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225 * Made READ. so that no write occurs at boot (Boisy on Feb 5, 2012)
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226 lda #READ.
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227 os9 I$ChgDir change data dir.
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228 bcs L0125
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229 * leax >HDDev,pcr
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230 * lda #EXEC.
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231 * os9 I$ChgDir change exec. dir to HD
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232 * ENDC
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233
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234 L0125 equ *
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235 IFEQ atari+corsham
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236 IFEQ Level-1
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237 * Setup BASIC code (CoCo port only)
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238 * leax >BasicRst,pcr
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239 * ldu #D.CBStrt
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240 * ldb #BasicRL
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241 *CopyLoop lda ,x+
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242 * sta ,u+
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243 * decb
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244 * bne CopyLoop
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245 ELSE
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246 os9 F$ID get process ID
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247 lbcs L01A9 fail
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248 leax ,u
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249 os9 F$GPrDsc get process descriptor copy
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250 lbcs L01A9 fail
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251 leay ,u
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252 ldx #$0000
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253 ldb #$01
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254 os9 F$MapBlk
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255 bcs L01A9
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256
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257 * lda #$55 set flag for Color BASIC
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258 * sta <D.CBStrt,u
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259 * Copy our default I/O ptrs to the system process
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260 ldd <D.SysPrc,u
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261 leau d,u
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262 leau <P$DIO,u
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263 leay <P$DIO,y
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264 ldb #DefIOSiz-1
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265 L0151 lda b,y
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266 sta b,u
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267 decb
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268 bpl L0151
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269 ENDC
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270 ENDC
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271 *
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272 * IFEQ ROM
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273 * Fork shell startup here
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274 * IFEQ atari+corsham
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275 * Added 12/14/03: If SHIFT is held down, startup is not run (CoCo only)
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276 * lda #$01 standard output
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277 * ldb #SS.KySns
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278 * os9 I$GetStt
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279 * bcs DoStartup
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280 * bita #SHIFTBIT SHIFT key down?
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281 * bne L0186 Yes, don't to startup or autoex
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282 * ENDC
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283
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284 *DoStartup leax >Shell,pcr
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285 * leau >Startup,pcr
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286 * ldd #256
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287 * ldy #StartupL
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288 * os9 F$Fork
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289 * bcs DoAuto Startup failed..
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290 * os9 F$Wait
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291 * ENDC
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292
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293 * Fork AutoEx here
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294 *DoAuto leax >AutoEx,pcr
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295 * leau >CRtn,pcr
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296 * ldd #$0100
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297 * ldy #$0001
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298 * os9 F$Fork
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299 * bcs L0186 AutoEx failed..
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300 * os9 F$Wait
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301
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302 L0186 equ *
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303 ldu ,s
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304 FrkShell leax >ShellPrm,pcr
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305 leay ,u
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306 ldb #ShellPL
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307 L0190 lda ,x+
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308 sta ,y+
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309 decb
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310 bne L0190
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311 * Fork final shell here
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312 leax >Shell,pcr
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313 lda #$01 D = 256 (B already 0 from above)
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314 ldy #ShellPL
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315 IFGT Level-1
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316 os9 F$Chain Level 2/3. Should not return..
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317 ldb #$06 it did! Fatal. Load error code
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318 bra Crash
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319
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320 L01A9 ldb #$04 error code
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321 Crash clr >DPort+$08 turn off disk motor
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322 jmp <D.Crash fatal error
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323 ELSE
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324 os9 F$Fork Level 1.
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325 bcs DeadEnd Fatal.
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326 os9 F$Wait
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327 bcc FrkShell OK, go start shell.
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328 DeadEnd bra DeadEnd
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329 ENDC
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330
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331 IcptRtn rti
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332
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333 emod
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334 eom equ *
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335 end
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