Mercurial > hg > Members > kono > nitros9-code

annotate level1/cmds/mfree.asm @ 2798:b70d93f8d7ce lwtools-port

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Updated coco1/modules/makefile and coco3/modules/makefile to help resolve issues with i(x) and s(x) descriptors. Updated level1/coco1/modules/makefile & level2/coco3/modules/makefile so that correct values would be sent to assembler when building superdesc.asm for s(x).dd and i(x).dd descriptors.
author drencor-xeen
date Mon, 28 Jan 2013 16:13:05 -0600
parents 84ea83668304
children
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1 ********************************************************************
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2 * Mfree - Show free memory
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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 ????/??/??
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10 * From Tandy OS-9 Level One VR 02.00.00.
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11
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12 nam Mfree
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13 ttl Show free memory
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14
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15 * Disassembled 02/04/05 15:22:05 by Disasm v1.6 (C) 1988 by RML
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16
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17 ifp1
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18 use defsfile
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19 endc
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20
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21 tylg set Prgrm+Objct
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22 atrv set ReEnt+rev
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23 rev set $00
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24 edition set 5
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25 stdout set 1
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26
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27 mod eom,name,tylg,atrv,start,size
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28
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29 org 0
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30 fmbegin rmb 2
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31 fmend rmb 2
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32 u0004 rmb 1
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33 u0005 rmb 1
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34 upper rmb 2 Upper boundary of free segment
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35 lower rmb 2 Lower boundary of free segment
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36 pages rmb 1
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37 bufptr rmb 2
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38 buffer rmb 530
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39 size equ .
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40
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41 name fcs /Mfree/
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42 fcb edition
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43
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44 header fcb C$LF
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45 fcc " Address pages"
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46 fcb C$LF
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47 fcc "--------- -----"
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48 fcb $80+C$CR
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49 totfree fcb C$LF
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50 fcs "Total pages free = "
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51 L0048 fcs "Graphics Memory "
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52 notalloc fcs "Not Allocated"
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53 ataddr fcs "at: $"
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54
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55 start leay buffer,u
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56 sty <bufptr
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57 leay <header,pcr
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58 bsr ApndStr
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59 bsr print
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60 ldx >D.FMBM The free memory bitmap pointer start
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61 stx <fmbegin
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62 ldx >D.FMBM+2 The free memory bitmap pointer end
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63 stx <fmend
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64 clra
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65 clrb
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66 sta <u0005 Clear
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67 std <upper Clear
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68 std <lower Clear
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69 stb <pages Clear
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70 ldx <fmbegin
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71 nextbyte lda ,x+
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72 bsr L00A8
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73 cmpx <fmend
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74 bcs nextbyte
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75 bsr L00B8
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76 leay <totfree,pcr
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77 bsr ApndStr
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78 ldb <u0005
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79 bsr bDeci
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80 bsr print
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81 lbsr display
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82 clrb
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83 os9 F$Exit
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84 *
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85 L00A8 bsr L00AA
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86 L00AA bsr L00AC
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87 L00AC bsr L00AE
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88 L00AE lsla
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89 bcs L00B8
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90 inc <u0005
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91 inc <pages
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92 inc <upper
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93 rts
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94 L00B8 pshs b,a
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95 ldb <pages
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96 beq L00D7
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97 ldd <lower
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98 bsr dHexa
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99 lda #$2D '-' char
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100 bsr ApndA
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101 ldd <upper
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102 subd #$0001
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103 bsr dHexa
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104 bsr aspace Append a space to buffer
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105 bsr aspace Append a space to buffer
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106 ldb <pages
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107 bsr bDeci
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108 bsr print
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109 L00D7 inc <upper
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110 ldd <upper
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111 std <lower
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112 clr <pages
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113 puls pc,b,a
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114 *
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115 * Append string (in reg y) to buffer
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116 *
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117 ApndStr lda ,y
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118 anda #$7F
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119 bsr ApndA
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120 lda ,y+
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121 bpl ApndStr
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122 rts
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123 *
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124 * Print the buffer
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125 *
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126 print pshs y,x,a
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127 lda #C$CR Add form feed to buffer
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128 bsr ApndA
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129 leax buffer,u Reset bufptr to start of buffer
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130 stx <bufptr
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131 ldy #80 Max line length = 80
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132 lda #stdout
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133 os9 I$WritLn
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134 puls pc,y,x,a
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135 *
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136 * Appends the content of register B in decimal
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137 * to the buffer
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138 *
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139 bDeci lda #$FF
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140 clr <u0004
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141 L0105 inca
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142 subb #$64
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143 bcc L0105
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144 bsr L0119
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145 lda #$0A
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146 L010E deca
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147 addb #$0A
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148 bcc L010E
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149 bsr L0119
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150 tfr b,a
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151 inc <u0004
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152 L0119 tsta
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153 beq L011E
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154 sta <u0004
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155 L011E tst <u0004
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156 bne L0124
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157 aspace lda #$F0
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158 L0124 adda #$30 Offset to "0" in ascii table
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159 cmpa #$3A
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160 bcs ApndA
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161 adda #$07
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162 *
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163 * Append character (in a) to buffer
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164 *
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165 ApndA pshs x
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166 ldx <bufptr
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167 sta ,x+
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168 stx <bufptr
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169 puls pc,x
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170 *
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171 * Append register D as hex string to buffer
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172 *
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173 dHexa clr <u0004
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174 bsr L013C
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175 tfr b,a
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176 L013C pshs a
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177 lsra
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178 lsra
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179 lsra
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180 lsra
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181 bsr L0146
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182 puls a
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183 L0146 anda #$0F
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184 bra L0119
90
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185 display pshs y,x
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186 leay >L0048,pcr
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187 bsr ApndStr
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188 lda #stdout
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189 ldb #SS.DStat
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190 os9 I$GetStt
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191 bcc L0163
90
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192 leay >notalloc,pcr
6aa54d3691e5 I needed to understand how OS9 does its memory housekeeping.
roug
parents: 15
diff changeset
193 bsr ApndStr
0
6641a883d6b0 Initial revision
boisy
parents:
diff changeset
194 bra L016E
90
6aa54d3691e5 I needed to understand how OS9 does its memory housekeeping.
roug
parents: 15
diff changeset
195 L0163 leay >ataddr,pcr
6aa54d3691e5 I needed to understand how OS9 does its memory housekeeping.
roug
parents: 15
diff changeset
196 lbsr ApndStr
0
6641a883d6b0 Initial revision
boisy
parents:
diff changeset
197 tfr x,d
90
6aa54d3691e5 I needed to understand how OS9 does its memory housekeeping.
roug
parents: 15
diff changeset
198 bsr dHexa
0
6641a883d6b0 Initial revision
boisy
parents:
diff changeset
199 L016E puls y,x
90
6aa54d3691e5 I needed to understand how OS9 does its memory housekeeping.
roug
parents: 15
diff changeset
200 lbra print
15
0912ac5dc2ff Added initial and dates to some source files
boisy
parents: 0
diff changeset
201
0
6641a883d6b0 Initial revision
boisy
parents:
diff changeset
202 emod
6641a883d6b0 Initial revision
boisy
parents:
diff changeset
203 eom equ *
15
0912ac5dc2ff Added initial and dates to some source files
boisy
parents: 0
diff changeset
204 end
0912ac5dc2ff Added initial and dates to some source files
boisy
parents: 0
diff changeset
205