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- 10 rem sample utility programs
- 20 rem err-read disk error channel
- 30 close100:open100,8,15
- 40 input#100,n,er$,t,s
- 50 printn;er$;t;s:close100:end
- 60 rem hex-convert a number from decimal to hexadecimal
- 70 print"convert to hex"
- 80 d=0:input"decimal";d:ifd=0thenend
- 90 h$="":d=d/4096:fori=1to4:t%=d:h$=h$+chr$(48+t%-(t%>9)*7)
- 100 d=16*(d-t%):next:print"hex "h$:goto80
- 110 rem dec-convert from hexadecimal to decimal
- 120 print"convert to decimal"
- 130 h$="":input"hex";h$:ifh$=""thenend
- 140 d=0:fori=1to4:t%=asc(h$):t%=t%-48+(t%>64)*7
- 150 h$=mid$(h$,2):d=16*d+t%:next:print"decimal"d:goto130
- 160 rem init-initialize disk drive
- 170 close100:open100,8,15,"i":input#100,n,er$,t,s
- 180 ifn<>0then50
- 190 print"drive initialized":end
- 200 rem scratch-delete a file from disk
- 210 f$="":input"file";f$:iff$=""thenend
- 220 print"scratch "f$:input"sure (y/n)";r$:ifr$<>"y"thenend
- 230 close100:open100,8,15,"s0:"+f$:goto40
- 240 rem rename-rename a file
- 250 f1$="":input"old name";f1$:iff1$=""thenend
- 260 f2$="":input"new name";f2$:iff2$=""thenend
- 270 close100:open100,8,15,"r0:"+f2$+"="+f1$:goto40
- 280 rem header-format a new disk
- 290 f1$="":input"disk name";f1$:iff1$=""orlen(f1$)>16then290
- 300 f2$="":input"2 char id";f2$:iflen(f2$)<>2then300
- 310 print"this will erase disk":input"go ahead (y/n)";r$:ifr$<>"y"thenend
- 320 close100:open100,8,15,"n0:"+f1$+","+f2$:close100:goto20
- 330 rem dir-print disk directory
- 340 z$=chr$(0):close100:close101:open100,8,15:open101,8,0,"$0"
- 350 input#100,n,er$,t,s:ifn<>0then50
- 360 get#101,a$:ifa$<>""then360
- 370 printa$;:goto460
- 380 getc$:ifc$=""then420
- 390 ifc$<>" "then510
- 400 getc$:ifc$=""then400
- 410 ifc$<>" "then510
- 420 get#101,a$:s=st:a=asc(a$+z$)
- 430 get#101,b$:s=st:b=asc(b$+z$)
- 440 ifsthen510
- 450 ifa=1andb=1thengosub480
- 460 get#101,a$:ifa$=""thenprint:goto380
- 470 printa$;:goto460
- 480 get#101,a$:s=st:a=asc(a$+z$)
- 490 get#101,b$:s=st:b=asc(b$+z$)
- 500 n=b*256+a:printn;:return
- 510 close101:close100
- 520 end
- 530 rem help-print documentation
- 540 print:print"commands available are:"
- 550 print"err -read error channel"
- 560 print"hex -convert number to hex"
- 570 print"dec -convert number to decimal"
- 580 print"init -initialize disk drive"
- 590 print"scratch -delete disk file"
- 600 print"rename -rename a disk file"
- 610 print"header -format a new disk"
- 620 print"dir -print the disk directory"
- 630 print"help -print this help message"
- 640 end
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