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Code Block

   10 REM **********************************
   20 REM Hexdump (C) Danny Langton        *
   30 REM Aware Technology, DECEMBER 1988  *
   40 REM TO BE TREATED AS PUBLIC DOMAIN   *
   50 REM I.E. COPY AND USE BUT DON'T SELL *
   60 REM **********************************
   70 PROCassemble
   80 REPEAT
   90   CLS:REPEATINPUT''"Name of file to dump : "'"(Use [ESCAPE] to quit)"SPC10""D$:UNTILLEND$
  100   X=OPENIN D$:IFX=0PRINT'"That file does not exist":GOTO90
  110   PRINT"Use UP and DOWN cursor keys to move through file"'"a line at a time,"'"[SHIFT] and cursor keys for a page at a time"'"and [DEL] to quit":TIME=0:REPEATUNTILTIME>300
  120   L%=0
  130   CLS
  140   REPEAT
  150     PROCdump(L%)
  160     CALL flush
  170     G%=GET:IFG%=0 G%=GET
  180     L%=L%+(G%=255)*16+(G%=251)*112-(G%=254)*16-(G%=250)*112
  190     IF G%=246 L%=EXT#X-96-(EXT#X)MOD16
  200     IF L%<0 OR L%>EXT#X OR G%=247L%=0
  210   UNTILG%=127
  220 UNTIL0
  230 :
  240 DEFPROCdump(L%)
  250 CLS
  260 PTR#X=L%
  270 IFEXT#X-L%<112 F%=EXT#X-L% ELSE F%=112
  280 R%=0:C%=0
  290 PRINTTAB(0,0)STRING$(8-LENSTR$~L%,"0")STR$~L%
  300 FOR M%=L% TO L%+F%-1
  310   IFR%=7GOTO360
  320   N%=BGET#X:N$=STR$~N%:IF LEN N$=1 N$="0"+N$
  330   PRINTTAB(12+C%*3,R%)N$TAB(64+C%,R%);
  340   IFN%>31 AND N%<127 PRINTCHR$N%; ELSE PRINT".";
  350   C%=C%+1:IFC%=16 C%=0:R%=R%+1:IFR%<7PRINTTAB(0,R%)STRING$(8-LENSTR$~(L%+R%*16),"0")+STR$~(L%+R%*16)
  360 NEXT
  370 ENDPROC
  380 :
  390 DEFPROCassemble
  400 DIMflush 50
  410 FORpass=0TO2STEP2
  420   P%=flush
  430   [OPT pass
  440   LD HL,0:ADD HL,SP:LD SP,(&1FFE):PUSH HL:CALL main:POP HL:LD SP,HL:RET
  450   .main
  460   RST &20
  470   DEFB &33
  480   RET
  490   ]
  500 NEXT
  510 ENDPROC
  520 :

Z88 Easter Eggs / ROM 2

There is a hidden message immediately before the internal ROM application front DOR in bank 7 at offset 3F57.
Enter the command: .MV 3F57 07 in Gunther Strube's Intuition on the Assembler Workbench ROM.

Or use Thierry Peycru's Zmonitor on the Z88 Forever Compilation ROM.

Or use ROMDMPx.BAS or similar program.

Or enter and run this BASIC / machine code program at your own risk. One small mistake in typing it in could corrupts memory in your Z88 and cause a FAIL or HARD RESET immediately or months later loosing all your files.

Code Block

   10 DIM code 29
   20 DIM buff 104
   30 P%=code
   40 [
   50 OPT 2
   60 LD A,(&4D3)
   70 PUSH AF
   80 LD A,7
   90 LD (&4D3),A
  100 OUT (&D3),A
  110 LD HL,&FF57
  120 LD DE,buff
  130 LD BC,104
  140 LDIR
  150 POP AF
  160 LD (&4D3),A
  170 OUT (&D3),A
  180 RET
  190 ]
  200 CALL code
  210 PRINT $buff

Yahtzee

The popular dice game.

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Old Version 5

New Version 6

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Z88 Easter Eggs / ROM 2

Yahtzee