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Forums > CSDb Discussions > file type
2010-05-06 07:48
maestro

Registered: Mar 2004
Posts: 660
file type

right then i have a .seq file on a floppy disk here are my questions

1st one is how can i get this off the floppy on to my pc??

2nd one is what is a .seq file?

3rd one is this file type actually used by the commodore and if it is what is it used for??
2010-05-06 07:54
cba

Registered: Apr 2002
Posts: 910
A seq file is a valid c64 file, it's often used to store text.

There are several seq file viewers available.

2010-05-06 07:59
maestro

Registered: Mar 2004
Posts: 660
so in theory i could open the file with a seq reader and see what is inside the file but how to get it onto the pc??

the reason i asked is one of the derby ram disks will not read write a d64 image with warpcopy but it sees the file in the directory, so i want to know if the file can be disregarded to make a image of wether or not this file is needed with this disk/proggy
2010-05-06 08:05
ΛΛdZ

Registered: Jul 2005
Posts: 139
Did you check if the floppy works on a normal c64+1541?

Most disks will be copied fine with warpcopy (if you get
a fucked up dir in d64 then disable IEC-mode (fast mode)).

If the file works fine on a c64+1541 and still not working
on d64 then it is possible that you need to nibble the disk
to get data from other places than then usual 35 tracks...
2010-05-06 09:49
maestro

Registered: Mar 2004
Posts: 660
the disk works fine on the c64

the directory works fine on warpcopy

when i try to make an image with warpcopy its like some sort of protection as the same little sectors/blocks are red and ive noticed this on a few disks...the same blocks are red all the time and when you check the d64 image its all garbled..

ok on the warpcopy screen when you read the disk there are 611 little blocks to be read for the disk....the following occurs alot on alot of disks....blocks 356,357,462 and 546 are red...when this happens you get a garbage d64 image...9 times out of 10 i have been able to export the files one at a time and make a fresh d64...but not with this disk...when i try to export the .seq file it comes up file mismatch

and how to i nibble copy to a d64?? with starcommander and a cable or is there another way to get it to the pc??

2010-05-06 10:08
ΛΛdZ

Registered: Jul 2005
Posts: 139
You need to modify your 1541 drive to make nibble files
to pc in the G64 format.

Here is how to solder the thing to a drive.
(notice differences with 1541, 1541c, 1541-ii etc)
http://d81.de/R.I.P/Para1541II.shtml

I will recommend you to buy the cable(xap1541) +
internal parallel port (not the socket version!)

http://ist.uwaterloo.ca/~schepers/c64par.html
http://ist.uwaterloo.ca/~schepers/xap1541.html

Write peter an email and get the things...
(apx. 30 USD)
2010-05-06 20:47
Krill

Registered: Apr 2002
Posts: 1120
A .seq file is formatted just like a .prg file, only that the first two bytes are normal data, there is no load address.

Use Dirmaster or similar to change the filetype to .prg, then just load the file to whatever address you like or copy it etc.

The first two bytes can be recovered by looking at the first data block using e.g. Action Replay's @BR monitor command: @BR 11 00 0800 in the monitor will load the block on track 17, sector 0 to $0800.
2010-05-07 13:07
Graham
Account closed

Registered: Dec 2002
Posts: 990
SEQ and PRG are quite the same. LOAD and SAVE are pre-set to PRG use, but you can easily force those operations to perform on SEQ just the same:

LOAD "<filename>,S,R",8
SAVE "<filename>,S,W",8


Same works for USR files:

LOAD "<filename>,U,R",8
SAVE "<filename>,U,W",8


Only REL and DEL files cannot be used that way.
2010-05-08 10:49
Count Zero

Registered: Jan 2003
Posts: 870
maestro:

2 - when transferring many disks make sure your drive head is clean and all the common things. if nothing is working out with warpcopy it likely is the disk - whenever nibbling the disk is too much hazzle start by trying to filecopy.
.seq as others here said are often used for text - especially for manual texts, so they are of some importance. Any duplicator, filemaster or dream copy should do them fine.

/cz
2010-05-08 20:27
maestro

Registered: Mar 2004
Posts: 660
count zero my heads are always clean as boy are these disks dirty...the only reason i asked about the seq file was to see what its importance was....now i know it could be important so if i get any more probs i know somehow i need to copy this file

i also thought the file maybe for some kind of txt as the file that was being a problem was called crunched docs or something like that

anyway thanks for all your help its much appreciated
2010-05-08 20:44
Mace

Registered: May 2002
Posts: 1780
Quote:
LOAD and SAVE are pre-set to PRG use, but you can easily force those operations to perform on SEQ just the same
Holy crap, I didn't know it was THAT simple :D
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