NEW-ROM is a new software and I send you on a disc!!!
This software works only on Plus/4 (not on C16) and only with 1541 or compatible disk drive (not on 1551)!

The NEW-ROM is a new operating system on Plus/4!
If you want to use this, then change your internail ROM ICs (on motherboard, U23 U24 U25) to a three 27128 or 27128A 16Kbytes EPROM IC.
Of course, you need burning three files from the disk to the EPROM ICs!
Write me if you haven't an Eprom burner and you want to use NEW-ROM).
The three IC 1200 Forint (Hungarian).


:: The new BASIC functions

OLD - recall the BASIC programs after NEW or RESET
TURBO -  turbo loader and saver in one, press F1 to activate or kill it
HUNT - find the BASIC strings
       syntax: HUNT , text
       example: hunt , print (write all line numbers where "print" is found)
FCOPY - file copier, read disk directory, where you can select the files for
        copy with turbo (max. 239 blocks)
CRUNCH - byte cruncher for BASIC or Assembly programs
         syntax: CRUNCH "filename" (BASIC)
                 CRUNCH "filename,startaddress, endaddress,jumpaddress
FFORMAT - fast disk formatter, (diskname max. 16 chars, ID max. 5 chars)
          syntax: FFORMAT "diskname","id"
CHANGE - drive number changer
         syntax: CHANGE sourcedrivenumber TO targetdrivenumber
         example: change 8 to 9
BACKUP - single drive copier
         syntax: BACKUP
BACKUP - double drive copier
         syntax: BACKUP sourcedrivenumber TO targetdrivenumber
         example: backup 8 to 9
BLOAD - like DLOAD but you can select the start load address
        syntax: BLOAD "filename",startloadaddress
        example: bload "filename",16384
SCRATCH - now it no longer stops the input while is working


:: New Monitor functions  

$ - directory from disk
@ - drive status (DS$)
@doscommand - send dos command (@I)
* - select RAM or ROM ($07F8)
I - ASCII dump
" - ASCII write
B - binary dump
] - binary write
K - screen code dump
Q - compress file (see BASIC "CRUNCH")
    syntax: Q "filename", startaddress, endaddress, jumpaddress
$number - change hex number to dec and bin
#number - change dec number to hex and bin
%number - change bin number to dec and hex
/ - like L (load), but you can BLOAD a program
    syntax: / "filename" (load file from disk)
            / "filename",address (load filr from disk starting to "address")

Full illegal Assembly codes in "A" and "D" commands!


:: Other features

The default colors are gray and black, the cursor speed is double
Function keys are:

     BASIC  / Monitor

F1:  Turbo       D
F2:  Dload       /
F3:  Directory   $
F4:  Monitor     X
F5:  Dsave       I
F6:  Run         B
F7:  List        M
F8:  Help        ?

ESC functions:

ESC+R color is black, cursor is white, and screen is cleared
ESC+U video reset
ESC+E cursor goes to 18 column (Assembly code)
ESC+F start function ROM /JMP ($8003, usually Dir-God utility)
ESC+G JSR $0333
ESC+S symbol shift on/off
      example: shift+A=AUTO
               shift+F=FOR

In BASIC and MOnitor you can scroll the screen with CTRL+arrow.
Press CTRL+C= and press reset to enter Dir-masterutility.
Directory and $ use a ":" char for a better usage, hence press F2 to load files easily.


:: Boot disk

When you turn on your Plus/4, then the left corner flashing a disk waiting for disk inserting.
If no drive is ready, then the BASIC will start
If the disk is not a boot disk, then the BASIC will start
If the disk is a boot disk, a program is automatically loaded and started.

When you turn on the Plus/4, the system checks $FFF5, and if it isn't #$94, then clear full memory and starting the booting sequence;
if $FFF5 is #$94, the memory is not cleared and no boot disk is started.
Use "boot disk maker" program.

Track 18; Sector 00

$FF12 ─────────────────────┐
$FF07 ──────────────────┐  │
$ff06 ───────────────┐  │  │            
$FF15/$FF19 ──────┐  │  │  │
turbo on/off ──┐  │  │  │  │
off=0 / on=1 ──┤  │  │  │  │
boot disk┐     │  │  │  │  │
identify │     │  │  │  │  │
      ┌──┴───┐ ├┐ ├┐ ├┐ ├┐ ├┐
  >B0 43 42 4d 01 00 1b 08 C4 :CBM.....
  >B8 D0 00 00 00 00 00 .. .. :........
      ├┘ ├┘ ├───┘ ├───┘
      │  │  │     │
$FF13 ┘  │  │     │
$FF16 ───┤  │     │
$FF17 ───┤  │     │
$FF18 ───┘  │     │
filename ───┤     │
example:"a*"┘     │
startaddress ─────┘
low/high


:: Don't try to use this!

With NEW_ROM, it won't work:

- tape

- commands like PAINT
                BOX
                CIRCLE
                GSHAPE
                SSHAPE
                DRAW
                LOCATE
                SCALE
                CHAR (text screen only)
                RGR
                RCLR
                RLUM
                RDOT

- 3-PLUS-1

┌────────────────────┐
 written by: Tiger/UF
├--------------------┤
 typed by : Luca/FIRE
└────────────────────┘