diff --git a/rom/epple2sys.s65 b/rom/epple2sys.s65
new file mode 100644
index 0000000..97f51df
--- /dev/null
+++ b/rom/epple2sys.s65
@@ -0,0 +1,935 @@
+;    Epple ][ System Demo ROM
+;    Copyright (C) 2009 by Christopher A. Mosher <cmosher01@gmail.com>
+;
+;    This program is free software: you can redistribute it and/or modify
+;    it under the terms of the GNU General Public License as published by
+;    the Free Software Foundation, either version 3 of the License, or
+;    (at your option) any later version.
+;
+;    This program is distributed in the hope that it will be useful,
+;    but WITHOUT ANY WARRANTY, without even the implied warranty of
+;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;    GNU General Public License for more details.
+;
+;    You should have received a copy of the GNU General Public License
+;    along with this program. If not, see <http://www.gnu.org/licenses/>.
+;
+;
+;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+;
+;
+;
+; constants
+SCREENWID   = 40 ; width of text screen
+SCREENHGT   = 24 ; height of text screen
+;
+;
+;
+; ASCII values (high bit set)
+BS          = $88
+CR          = $8D
+SPACE       = $A0
+;
+;
+;
+; zero page addresses (our variables)
+TMPW        = $00 ; $01
+ADDR        = $02 ; $03
+ADDR2       = $04 ; $05
+TEXTROW     = $06 ; $07
+TMP         = $08
+COL         = $09
+ROW         = $0A
+INBUFC      = $0B
+;
+;
+;
+; page 2 (input buffer)
+INBUF       = $0200
+;
+;
+;
+; I/O addresses ($C0xx)
+READKEY     = $C000
+CLEARKEY    = $C010
+TEXTON      = $C051
+MIXEDOFF    = $C052
+PAGE2OFF    = $C054
+HIRESOFF    = $C056
+
+
+
+
+
+
+;
+;
+;
+;;RESET
+; Handles power-on or reset-button-press.
+; Initializes CPU, screen; displays welcome message;
+; invokes the shell.
+;
+RESET       NOP
+            SEI
+            CLD
+            LDX #$FF
+            TXS
+
+            LDA TEXTON
+            LDA MIXEDOFF
+            LDA PAGE2OFF
+            LDA HIRESOFF
+
+            NOP
+
+            JSR ENDSCR
+            JSR ADVCUR
+            JSR WELCOME
+            JMP SHELL
+;
+;
+;
+;;LINEADDR
+; Computes address of column 0 for text line
+; (0-23) given in A, into TEXTROW.
+; input:
+;  A        000edcba
+; output:
+;  TEXTROW  aeded000 000001cb
+; scratch:
+;  X
+;
+LINEADDR    TAX
+            LDA #$04
+            STA TEXTROW+1
+            TXA
+            LSR
+            AND #$03
+            ORA TEXTROW+1
+            STA TEXTROW+1
+
+            BCC ZERO
+            LDA #$80
+            BNE STORELOW
+ZERO        LDA #$00
+STORELOW    STA TEXTROW
+            TXA
+            AND #$18
+            TAX
+            ORA TEXTROW
+            STA TEXTROW
+            TXA
+            ASL
+            ASL
+            ORA TEXTROW
+            STA TEXTROW
+            RTS
+;
+;
+;
+;;CHARADDR
+; Computes address of character at ROW,COL
+; for use as STA (TEXTROW),Y
+; input: ROW, COL
+; output: TEXTROW, Y
+; scratch: A,X
+;
+CHARADDR    LDA ROW
+            JSR LINEADDR
+            LDY COL
+            RTS
+;
+;
+;
+;;ENDSCR
+; Moves cursor to bottom right.
+; output: ROW, COL
+; scratch: A
+;
+ENDSCR      LDA #SCREENHGT-1
+            STA ROW
+            LDA #SCREENWID-1
+            STA COL
+            RTS
+;
+;
+;
+;;SCROLL
+; Scrolls the entire screen up one line
+; scratch: A. Y, X, TMP, TMPW, TEXTROW
+;
+SCROLL      LDA #0
+            STA TMP ; row
+
+LOOPROW     LDA TMP
+            JSR LINEADDR
+            LDA TEXTROW
+            STA TMPW
+            LDA TEXTROW+1
+            STA TMPW+1
+            INC TMP
+            LDA TMP
+            JSR LINEADDR
+
+            LDY #SCREENWID-1
+LOOPCOL     LDA (TEXTROW),Y
+            STA (TMPW),Y
+            DEY
+            BPL LOOPCOL
+
+            LDA TMP
+            CMP #SCREENHGT-1
+            BNE LOOPROW
+
+            RTS
+;
+;
+;
+;;CLEARLINE
+; Clears line given by A
+; input: A
+; scratch: X, Y, TEXTROW
+;
+CLEARLINE   JSR LINEADDR
+            LDA #SPACE
+            LDY #SCREENWID-1
+LOOPCLR     STA (TEXTROW),Y
+            DEY
+            BPL LOOPCLR
+            RTS
+;
+;
+;
+;;PRCURS
+; Prints the cursor (inverses char at ROL,COL)
+; input: ROW, COL
+; scratch: TEXTROW, Y, A, X
+;
+PRCURS      JSR CHARADDR
+            LDA #$60
+            STA (TEXTROW),Y
+            RTS
+;
+;
+;
+;;PRCHAR
+; Prints a normal character in A at ROW, COL;
+; advances cursor; scrolls if necessary
+; input: A, ROW, COL
+; scratch: TEXTROW, Y, X
+;
+PRCHAR      PHA
+            JSR CHARADDR
+            PLA
+
+            STA (TEXTROW),Y
+
+            JSR ADVCUR
+            RTS
+;
+;
+;
+;;ADVCUR
+; Advances cursor one position; scrolls if necessary.
+;
+ADVCUR      INC COL
+            LDA COL
+            CMP #SCREENWID
+            BNE ADVOK
+
+            JSR PRCR
+            JSR PRLF
+
+ADVOK       RTS
+;
+;
+;
+;;PRCR
+; Prints a carraige return (goes to start of same line)
+; output: COL
+; scratch: A
+;
+PRCR        LDA #0
+            STA COL
+            RTS
+;
+;
+;
+;;PRLF
+; Prints a line feed (goes down one line);
+; scrolls if necessary
+; input: ROW
+; output: ROW
+; scratch: A. Y, X, TMP, TMPW, TEXTROW
+;
+PRLF        INC ROW
+            LDA ROW
+            CMP #SCREENHGT
+            BNE LFOK
+
+            DEC ROW
+            JSR SCROLL
+            LDA #SCREENHGT-1
+            JSR CLEARLINE
+LFOK        RTS
+;
+;
+;
+;;PRBS
+; Prints a back-space (goes left one char)
+; input: COL, ROW
+; output: COL, ROW
+; scratch: A
+;
+PRBS        DEC COL
+            BPL BSOK
+            LDA #SCREENWID-1
+            STA COL
+            DEC ROW
+            BPL BSOK
+            INC ROW
+            LDA #0
+            STA COL
+BSOK        RTS
+;
+;
+;
+;;PRPROMPT
+; Prints the prompt character.
+; input: ROW, COL
+; scratch: A, TEXTROW, Y, X
+;
+PRPROMPT    JSR PRSTR
+            .BYT ("E"|%10000000) 
+.BYT ("2"|%10000000) 
+.BYT (">"|%10000000) 
+
+            .BYT 0
+            RTS
+;
+;
+;
+;;RDCHAR
+; Reads a character (waits for one) into A
+; (high bit will be set)
+;
+RDCHAR      LDA CLEARKEY
+NOKEY       LDA READKEY
+            BPL NOKEY
+            RTS
+;
+;
+;
+;;WELCOME
+;
+WELCOME     JSR PRSTR
+            .BYT ("E"|%10000000) 
+.BYT ("P"|%10000000) 
+.BYT ("P"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("]"|%10000000) 
+.BYT ("["|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("D"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("R"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("["|%10000000) 
+.BYT ("G"|%10000000) 
+.BYT ("P"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT ("V"|%10000000) 
+.BYT ("3"|%10000000) 
+.BYT ("]"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("?"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("F"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("R"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("H"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT ("P"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+            RTS
+;
+;
+;
+;;PRSTR
+; Prints a string (in code seg of caller)
+;
+PRSTR       PLA
+            STA TMPW
+            PLA
+            STA TMPW+1
+            INC TMPW
+            BNE NOC
+            INC TMPW+1
+NOC         LDY #0
+            LDA (TMPW),Y
+            TAY
+            LDA TMPW+1
+            PHA
+            LDA TMPW
+            PHA
+            TYA
+            BEQ DONE
+            JSR PRCHAR
+            JMP PRSTR
+DONE
+
+            RTS
+;
+;
+;;CVTHEX
+; Parses hex character ('0'-'9' or 'A'-'F') in A
+; and shifts into low-order nibble of TMPW.
+; Undefined op if A contains something else.
+;
+CVTHEX      CMP #("A"|%10000000)
+            BCC DIGIT
+            SBC #'A'-'9'-1
+DIGIT
+            AND #%00001111
+            ASL
+            ASL
+            ASL
+            ASL
+
+            ASL
+            ROL TMPW
+            ROL TMPW+1
+            ASL
+            ROL TMPW
+            ROL TMPW+1
+            ASL
+            ROL TMPW
+            ROL TMPW+1
+            ASL
+            ROL TMPW
+            ROL TMPW+1
+            RTS
+;
+;
+;;PRBYTE
+; Prints byte in A as hex
+;
+PRBYTE      PHA
+                ; ABCDxxxx
+                ; 1011ABCD
+            LSR
+            LSR
+            LSR
+            LSR
+            ORA #%10110000
+            CMP #("9"|%10000000)+1
+            BCC PRDIGIT
+            ADC #'A'-'9'-2
+PRDIGIT     JSR PRCHAR
+            PLA
+            AND #%00001111
+            ORA #%10110000
+            CMP #("9"|%10000000)+1
+            BCC PRDIGIT2
+            ADC #'A'-'9'-2
+PRDIGIT2    JSR PRCHAR
+            RTS
+;
+;
+;
+;;SHELL
+;
+SHELL       LDA #0
+            STA INBUFC
+            JSR PRPROMPT
+
+
+K_LOOP      JSR PRCURS
+            JSR RDCHAR
+
+K_CR        CMP #CR
+            BNE K_BS
+            LDA #SPACE
+            JSR PRCHAR
+            JSR COMMAND
+            JMP SHELL
+
+K_BS        CMP #BS
+            BNE K_CHAR
+            DEC INBUFC
+            BPL K_BS_OK
+            INC INBUFC
+            JMP K_LOOP
+K_BS_OK     JSR PRBS
+            LDA #SPACE
+            JSR PRCHAR
+            LDA #SPACE
+            JSR PRCHAR
+            JSR PRBS
+            JSR PRBS
+            JMP K_LOOP
+
+K_CHAR      LDY INBUFC
+            STA INBUF,Y
+            INC INBUFC
+            BNE K_CHAR_OK
+            DEC INBUFC
+            JMP K_LOOP
+K_CHAR_OK   JSR PRCHAR
+            JMP K_LOOP
+;
+;
+;
+;;COMMAND
+;
+COMMAND     JSR PRCR
+            JSR PRLF
+
+
+
+            LDY #0
+            CPY INBUFC
+            BNE PARS1
+            RTS
+PARS1       LDA INBUF,Y
+
+CMD_H       CMP #("?"|%10000000)
+            BEQ CMD_H_IMP
+            JMP CMD_D
+CMD_H_IMP
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("C"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("A"|%10000000) 
+.BYT ("N"|%10000000) 
+.BYT ("D"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("A"|%10000000) 
+.BYT ("C"|%10000000) 
+.BYT ("T"|%10000000) 
+.BYT ("I"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("N"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+.BYT ("-"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("D"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("["|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("]"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("D"|%10000000) 
+.BYT ("U"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("P"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("R"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("T"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("R"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("R"|%10000000) 
+.BYT ("U"|%10000000) 
+.BYT ("N"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("A"|%10000000) 
+.BYT ("T"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("S"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("S"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("T"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("M"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("R"|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("T"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("Y"|%10000000) 
+.BYT ("Y"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("?"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("S"|%10000000) 
+.BYT ("H"|%10000000) 
+.BYT ("O"|%10000000) 
+.BYT ("W"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("H"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT ("P"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRSTR
+            .BYT ("["|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("N"|%10000000) 
+.BYT ("T"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("R"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("A"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("V"|%10000000) 
+.BYT ("A"|%10000000) 
+.BYT ("L"|%10000000) 
+.BYT ("U"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("S"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("I"|%10000000) 
+.BYT ("N"|%10000000) 
+.BYT (" "|%10000000) 
+.BYT ("H"|%10000000) 
+.BYT ("E"|%10000000) 
+.BYT ("X"|%10000000) 
+.BYT ("]"|%10000000) 
+
+            .BYT 0
+            JSR PRCR
+            JSR PRLF
+
+            JSR PRCR
+            JSR PRLF
+
+            RTS
+
+CMD_D       CMP #("D"|%10000000)
+            BEQ CMD_D_IMP
+            JMP CMD_R
+
+CMD_D_IMP   LDA #0
+            STA TMP
+
+CMD_D_ARGS  LDA #0
+            STA TMPW
+            STA TMPW+1
+
+            LDX #4
+CMD_D_SP    INY
+            CPY INBUFC
+            BNE CMD_D_1
+            LDA TMP
+            BNE CMD_D_RUN
+            RTS
+CMD_D_1     LDA INBUF,Y
+            CMP #SPACE
+            BEQ CMD_D_SP
+            JSR CVTHEX
+            DEX
+            BNE CMD_D_SP
+            LDA TMP
+            BNE CMD_D_RUN
+            INC TMP
+            LDA TMPW
+            STA ADDR
+            STA ADDR2
+            LDA TMPW+1
+            STA ADDR+1
+            STA ADDR2+1
+            JMP CMD_D_ARGS
+
+CMD_D_RUN   LDA TMPW
+            STA ADDR2
+            LDA TMPW+1
+            STA ADDR2+1
+
+CMD_D_ADR   LDA ADDR+1
+            JSR PRBYTE
+            LDA ADDR
+            JSR PRBYTE
+            LDA #(":"|%10000000)
+            JSR PRCHAR
+
+CMD_D_BYT   LDA #SPACE
+            JSR PRCHAR
+            LDY #0
+            LDA (ADDR),Y
+            JSR PRBYTE
+            INC ADDR
+            BNE CMD_D_NOOV
+            INC ADDR+1
+CMD_D_CKRO  LDA ADDR
+            BNE CMD_D_NOOV
+            LDA ADDR+1
+            BEQ CMD_D_END
+CMD_D_NOOV  LDA ADDR+1
+            CMP ADDR2+1
+            BNE CMD_D_NEXT
+            LDA ADDR
+            CMP ADDR2
+CMD_D_NEXT  BCC CMD_D_CR
+            BEQ CMD_D_CR
+CMD_D_END   JSR PRCR
+            JSR PRLF
+            RTS
+CMD_D_CR    LDA ADDR
+            AND #%00000111
+            BNE CMD_D_BYT
+            JSR PRCR
+            JSR PRLF
+            JMP CMD_D_ADR
+
+CMD_R       CMP #("R"|%10000000)
+            BNE CMD_S
+            LDX #4
+CMD_R_SP    INY
+            CPY INBUFC
+            BNE CMD_R_1
+            RTS
+CMD_R_1     LDA INBUF,Y
+            CMP #SPACE
+            BEQ CMD_R_SP
+            JSR CVTHEX
+            DEX
+            BNE CMD_R_SP
+            JMP (TMPW)
+
+CMD_S       CMP #("S"|%10000000)
+            BEQ CMD_S_IMP
+            RTS
+CMD_S_IMP   LDX #4
+CMD_S_SP    INY
+            CPY INBUFC
+            BNE CMD_S_1
+            RTS
+CMD_S_1     LDA INBUF,Y
+            CMP #SPACE
+            BEQ CMD_S_SP
+            JSR CVTHEX
+            DEX
+            BNE CMD_S_SP
+            LDA TMPW
+            STA ADDR
+            LDA TMPW+1
+            STA ADDR+1
+
+            LDX #2
+CMD_S_SP2   INY
+            CPY INBUFC
+            BNE CMD_S_2
+            RTS
+CMD_S_2     LDA INBUF,Y
+            CMP #SPACE
+            BEQ CMD_S_SP2
+            JSR CVTHEX
+            DEX
+            BNE CMD_S_SP2
+            LDA TMPW
+            LDY #0
+            STA (ADDR),Y
+            RTS
+;
+;
+;
+;;VECTORS
+;
+VECTORS     RTS
+            JMP RESET
+            .WORD RESET
+            .WORD RESET