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272 lines
14 KiB
Plaintext
272 lines
14 KiB
Plaintext
CP/M ASM86 1.1 SOURCE: ECHO.A86 PAGE 1
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1
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2
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3 ;
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4 ; ECHO - Resident System Process
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5 ; Print Command tail to console
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6 ;
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7
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8 ;
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9 ; DEFINITIONS
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10 ;
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11
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12 00E0 ccpmint equ 224 ;ccpm entry interrupt
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13 0009 c_writebuf equ 9 ;print string
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14 0093 c_detach equ 147 ;detach console
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15 0094 c_setnum equ 148 ;set default console
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16 0086 q_make equ 134 ;create queue
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17 0087 q_open equ 135 ;open queue
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18 0089 q_read equ 137 ;read queue
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19 008B q_write equ 139 ;write queue
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20 0091 p_priority equ 145 ;set priority
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21
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22 0030 pdlen equ 48 ;length of Process
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23 ; Descriptor
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24
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25 0020 p_cns equ byte ptr 020h ;default cns
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26 0012 p_disk equ byte ptr 012h ;default disk
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27 0013 p_user equ byte ptr 013h ;default user
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28 0024 p_list equ byte ptr 024h ;default list
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29 0000 ps_run equ 0 ;PD run status
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30 0002 pf_keep equ 2 ;PD nokill flag
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31
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32 0000 rsp_top equ 0 ;rsp offset
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33 0010 rsp_pd equ 010h ;PD offset
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34 0040 rsp_uda equ 040h ;UDA offset
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35 0140 rsp_bottom equ 140h ;end rsp header
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36
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37 0008 qf_rsp equ 08h ;queue RSP flag
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38
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39 ;
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40 ; CODE SEGMENT
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41 ;
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42 CSEG
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43 org 0
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44
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45 0000 CDE0 ccpm: int ccpmint
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46 0002 C3 ret
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47
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48 main: ;create ECHO queue
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49 0003 B186BAC301 mov cl,q_make ! mov dx,offset qd
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50 0008 E8F5FF 0000 call ccpm
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51 ;open ECHO queue
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52 000B B187BA0903 mov cl,q_open ! mov dx,offset qpb
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53 0010 E8EDFF 0000 call ccpm
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CP/M ASM86 1.1 SOURCE: ECHO.A86 PAGE 2
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54
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55 ;set priority to normal
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56 0013 B191BAC800 mov cl,p_priority ! mov dx,200
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57 0018 E8E5FF 0000 call ccpm
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58
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59 ;ES points to SYSDAT
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60 001B 8E060000 mov es,sdatseg
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61
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62 loop: ;forever
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63 ;read cmdtail from queue
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64 001F B189BA0903 mov cl,q_read ! mov dx,offset qpb
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65 0024 E8D9FF 0000 call ccpm
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66
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67 ;set default values from PD
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68 0027 8B1E8302 mov bx,pdadr
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69 ; mov dl,es:p_disk[bx] ;p_disk=0-15
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70 ; inc dl ! mov disk,dl ;make disk=1-16
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71 ; mov dl,es:p_user[bx]
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72 ; mov user,dl
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73 ; mov dl,es:p_list[bx]
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74 ; mov list,dl
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75 002B 268A5720 mov dl,es:p_cns[bx]
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76 002F 88161903 mov console,dl
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77
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78 ;set default console
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79 ; mov dl,console
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80 0033 B194E8C8FF 0000 mov cl,c_setnum ! call ccpm
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81
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82 ;scan cmdtail and look for '$' or 0.
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83 ;when found, replace w/ cr,lf,'$'
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84
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85 0038 8D1E8502B024 lea bx,cmdtail ! mov al,'$' ! mov ah,0
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86 B400
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87 0040 8BD381C28300 mov dx,bx ! add dx,131
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88 nextchar:
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89 0046 3BDA770B 0055 cmp bx,dx ! ja endcmd
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90 004A 38077407 0055 cmp [bx],al ! je endcmd
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91 004E 38277403 0055 cmp [bx],ah ! je endcmd
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92 0052 43EBF1 0046 inc bx ! jmps nextchar
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93 endcmd:
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94 0055 C6070D mov byte ptr [bx],13
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95 0058 C647010A mov byte ptr 1[bx],10
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96 005C C6470224 mov byte ptr 2[bx],'$'
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97
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98 ;write command tail
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99 0060 8D168502B109 lea dx,cmdtail ! mov cl,c_writebuf
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100 0066 E897FF 0000 call ccpm
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101 ;detach console
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102 0069 8A161903 mov dl,console
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103 006D B193E88EFF 0000 mov cl,c_detach ! call ccpm
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104 ;done, get next command
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105 0072 EBAB 001F jmps loop
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106
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CP/M ASM86 1.1 SOURCE: ECHO.A86 PAGE 3
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107
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108 ;
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109 ; DATA SEGMENT
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110 ;
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111
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112 DSEG
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113 org rsp_top
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114
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115 0000 000000000000 sdatseg dw 0,0,0
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116 0006 000000000000 dw 0,0,0
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117 000C 00000000 dw 0,0
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118
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119 org rsp_pd
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120
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121 0010 00000000 pd dw 0,0 ; link,thread
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122 0014 00 db ps_run ; status
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123 0015 BE db 190 ; priority
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124 0016 0200 dw pf_keep ; flags
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125 0018 4543484F2020 db 'ECHO ' ; name
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126 2020
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127 0020 0400 dw offset uda/10h ; uda seg
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128 0022 0000 db 0,0 ; disk,user
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129 0024 0000 db 0,0 ; load dsk,usr
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130 0026 0000 dw 0 ; mem
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131 0028 00000000 dw 0,0 ; dvract,wait
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132 002C 0000 db 0,0
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133 002E 0000 dw 0
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134 0030 00 db 0 ; console
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135 0031 000000 db 0,0,0
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136 0034 00 db 0 ; list
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137 0035 000000 db 0,0,0
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138 0038 000000000000 dw 0,0,0,0
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139 0000
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140
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141 org rsp_uda
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142
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143 0040 0000DF010000 uda dw 0,offset dma,0,0 ;0
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144 0000
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145 0048 000000000000 dw 0,0,0,0
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146 0000
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147 0050 000000000000 dw 0,0,0,0 ;10h
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148 0000
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149 0058 000000000000 dw 0,0,0,0
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150 0000
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151 0060 000000000000 dw 0,0,0,0 ;20h
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152 0000
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153 0068 000000000000 dw 0,0,0,0
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154 0000
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155 0070 000000007D02 dw 0,0,offset stack_tos,0 ;30h
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156 0000
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157 0078 000000000000 dw 0,0,0,0
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158 0000
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159 0080 000000000000 dw 0,0,0,0 ;40h
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CP/M ASM86 1.1 SOURCE: ECHO.A86 PAGE 4
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160
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161 0000
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162 0088 000000000000 dw 0,0,0,0
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163 0000
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164 0090 000000000000 dw 0,0,0,0 ;50h
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165 0000
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166 0098 000000000000 dw 0,0,0,0
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167 0000
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168 00A0 000000000000 dw 0,0,0,0 ;60h
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169 0000
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170
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171 org rsp_bottom
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172
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173 0140 qbuf rb 131 ;Queue buffer
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174
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175 01C3 0000 qd dw 0 ;link
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176 01C5 0000 db 0,0 ;net,org
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177 01C7 0800 dw qf_rsp ;flags
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178 01C9 4543484F2020 db 'ECHO ' ;name
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179 2020
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180 01D1 8300 dw 131 ;msglen
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181 01D3 0100 dw 1 ;nmsgs
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182 01D5 00000000 dw 0,0 ;dq,nq
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183 01D9 00000000 dw 0,0 ;msgcnt,msgout
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184 01DD 4001 dw offset qbuf ;buffer addr.
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185
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186 01DF dma rb 128
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187
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188 025F CCCCCCCCCCCC stack dw 0cccch,0cccch,0cccch
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189 0265 CCCCCCCCCCCC dw 0cccch,0cccch,0cccch
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190 026B CCCCCCCCCCCC dw 0cccch,0cccch,0cccch
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191 0271 CCCCCCCCCCCC dw 0cccch,0cccch,0cccch
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192 0277 CCCCCCCCCCCC dw 0cccch,0cccch,0cccch
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193 027D 0300 stack_tos dw offset main ; start offset
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194 027F 0000 dw 0 ; start seg
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195 0281 0000 dw 0 ; init flags
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196
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197 0283 pdadr rw 1 ; QPB Buffer
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198 0285 cmdtail rb 129 ; starts here
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199 0306 0D0A24 db 13,10,'$'
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200
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201 0309 0000 qpb db 0,0 ;must be zero
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202 030B 0000 dw 0 ;queue ID
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203 030D 0100 dw 1 ;nmsgs
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204 030F 8302 dw offset pdadr ;buffer addr.
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205 0311 4543484F2020 db 'ECHO ' ;name to open
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206 2020
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207
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208 0319 00 console db 0
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209 ;disk db 0
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210 ;user db 0
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211 ;list db 0
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212
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CP/M ASM86 1.1 SOURCE: ECHO.A86 PAGE 5
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213
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214 end
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215
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216
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217 END OF ASSEMBLY. NUMBER OF ERRORS: 0. USE FACTOR: 2%
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CP/M ASM86 1.1 SOURCE: ECHO.A86 PAGE 006
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CCPM 0000 L 45# 50 53 57 65 80 100 103
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CCPMINT 00E0 N 12# 45
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CDETACH 0093 N 14# 103
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CMDTAIL 0285 V 85 99 198#
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CONSOLE 0319 V 76 102 208#
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CS SREG V
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CSETNUM 0094 N 15# 80
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CWRITEBUF 0009 N 13# 99
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DMA 01DF V 143 186#
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DS SREG V
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ENDCMD 0055 L 89 90 91 93#
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ES SREG V 60 75
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LOOP 001F L 62# 105
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MAIN 0003 L 48# 193
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NEXTCHAR 0046 L 88# 92
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PCNS 0020 N 25# 75
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PD 0010 V 121#
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PDADR 0283 V 68 197# 204
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PDISK 0012 N 26#
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PDLEN 0030 N 22#
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PFKEEP 0002 N 30# 124
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PLIST 0024 N 28#
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PPRIORITY 0091 N 20# 56
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PSRUN 0000 N 29# 122
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PUSER 0013 N 27#
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QBUF 0140 V 173# 184
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QD 01C3 V 49 175#
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QFRSP 0008 N 37# 177
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QMAKE 0086 N 16# 49
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QOPEN 0087 N 17# 52
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QPB 0309 V 52 64 201#
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QREAD 0089 N 18# 64
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QWRITE 008B N 19#
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RSPBOTTOM 0140 N 35# 171
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RSPPD 0010 N 33# 119
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RSPTOP 0000 N 32# 113
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RSPUDA 0040 N 34# 141
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SDATSEG 0000 V 60 115#
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SS SREG V
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STACK 025F V 188#
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STACKTOS 027D V 155 193#
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UDA 0040 V 127 143#
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