Video Writer

Collection of information about Philips VideoWriter 4460

ROM Dumps

Program rom contents

Disk imaging

Copies of VideoWriter disks have been made with Greaseweazle, the flux transition files are then opened with HxCFloppyEmulator and exported to img files containing raw sector data.

VWfile

Demonstration program to display files from disk image. Based on VW2MSX.BAS a program by Peter van Overbeek 1992.VW2MSX.BAS a program by Peter van Overbeek 1992

This version uses simulated disk track reading using fseek and fread accesing a disk image file.

Sample session:

PS C:\GitHub\VideoWriter\src\VWfile> ./VWfile.exe

#1 = Initial
#2 = Another
#3 = Copy of Initial
#4 = Grid page
#5 = Test document
Input file# to read 3
Selected file 'Copy of Initial     '

<<<<<<<< page 1 >>>>>>>>
*       The quick brown fox jumps over the lazy dog.
*       grbuge
*       David
<<<<<<<<  end   >>>>>>>>

MSX2

VW2MSX was listed using the online simulator WebMSX, google translate was used to better understand its operation.

The original program used a track read function written for the MSX2 in Z80 assembler, this has been recreated into source files in the msx/asm directory.

Z80 Disassembler

The Perl tool used to recreate the Z80 assembler listings CPU-Z80 disassembler

#!perl

use strict;
use warnings;

use CPU::Z80::Disassembler;
my $dis = CPU::Z80::Disassembler->new;

unlink "hello.ctl";
CPU::Z80::Disassembler->create_control_file("hello.ctl", "hello.bin", 0xC000);

$dis->load_control_file("hello.ctl");
$dis->memory->load_file( "hello.bin", 0xC000);

$dis->code(0xC000, "START");
$dis->labels->add(0xC003, "PRINT");
$dis->labels->add(0xC00D, "DONE");
$dis->analyse;
#$dis->defb(0xC00F, 13, "HELLO");
$dis->defmz(0xC00F, 13, "HELLO");

$dis->write_asm("hello.asm");