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Make DDP from DDP file

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Can some please tell me how to make DDP's from file? Can I do it on the Adam or do I need to do it on a PC? Do I need emulator?

 

Please let me know.

 

I made a deal with Maxell and have a large supply of Maxcell Pro 60 minute cassette and anyone who wants a DDP I can sell it for $5.00 plus shipping including printed cassette label.

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What is your hardware configuration on the Adam? Do you have a Disk Drive, IDE CF Card setup, ADE or VDD SD drive, Serial Interface, Modem?

 

What are your options re your PC(s)? Do you have an older system that you can boot into DOS and has a 5 1/4” FDD?

 

We need some basic info and not just a scream for help.

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Just now, NIAD said:

What is your hardware configuration on the Adam? Do you have a Disk Drive, IDE CF Card setup, ADE or VDD SD drive, Serial Interface, Modem?

 

What are your options re your PC(s)? Do you have an older system that you can boot into DOS and has a 5 1/4” FDD?

 

We need some basic info and not just a scream for help.

 

I didn't know what you needed to know so I just asked in general 

 

My Adam config:

 

2 - 5.25" Coleco Adam drive

1 - ADE

No Serial or modem

 

I have a retro PC with DOS 5 and 5.25" 360K floppy

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Great! You have an ADE and this will be the simplest as well as fastest method.

 

- copy the DISK or DDP images files you want to place on an actual Adam DDP or Disk onto the ADE SD card

 

- copy the File Manager v3.0 disk image file onto the ADE SD card
 

- place the SD card into the ADE and turn on your Adam

 

- using Williams Hick’s Image Manager program, mount File Manager in ADE drive #1, mount the program you want to copy to an ADAM DDP into ADE drive #2 and press the Computer Reset to boot File Manager

 

- place a blank ADAM DDP into the drive

 

- use the block copy options and copy blocks 0-159 from the disk image mounted in drive #2 to the Data Drive you inserted the DDP into (probably data drive #1) starting at block #0


You say you bought Maxell cassettes. Well, there is no easy way to format these audio cassettes into DIGITAL Data Packs for use on the Adam without a dual deck cassette player and also a drill to make the necessary alignment holes on the back of the Maxell cassette.

 

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No Problem I have a recording studio so I have a dual cassette and have already drilled the tapes. I just need to know how to format them

 

You said to copy blocks 0 to 159, will there be a file larger than 160 blocks?

 

 

 

Thanks for the help.

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Posted (edited)

Take a step back first before answering your latest question...

 

Since you have 2 Adam Disk Drives and an old PC that you can boot to DOS and use the DOS program DCOPY to write an Adam disk image file directly onto a formatted ADAM 5 1/4” disk. Another program you will find useful is the DOS program “The Adam Connection” for formatting ADAM disks on a PC (save wear and tear on your ADAM drives) as well transferring individual files (not whole image files) back and forth. Also, Adam Image Manager works great for working with Adam image files in the Windows environment.

 

All the above is available on www.adamarchive.org

 

As far as making your own ADAM DDPs from audio cassettes, place the ADAM DDP in the first cassette drive and the audio cassette in the second and proceed to dub it. You will probably have to play with the recording levels a couple times... trial and error. There is an informative “How to” available on the Adam Archive that you can download.

Edited by NIAD

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Over the years, there were larger sizes Disk Drives made available either by modding Coleco’s FDD or made brand new by Micro Innovations. Most disk images out there are the standard 160K variety but there are some that are:

 

- 320K (5 1/4”)

- 720K (3 1/2”)

- 1.44Mb (3 1/2”)

 

As I am sure you know, the ADAM DDP is 256K.

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so if a DDP is 256k and disk is 160K so doesn't each DDP file contain 256K or 2 disk images worth of information ?

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Posted (edited)
10 hours ago, videofx said:

so if a DDP is 256k and disk is 160K so doesn't each DDP file contain 256K or 2 disk images worth of information ?

A DDP can store 64K smaller than 2 full disk contents (160K x 2 = 320K).

 

There are a small amount of programs that span multiple disks and in most cases it is better off to copy them to multiple DDPs due to how the program is setup to look for certain files on specific disks especially if they use specific block load routines compared to filename load routines.

 

You can play around with the 320K blank data pack image file that is in the archive. This is an extended data pack format that was developed in the late 80s by E&T Software specifically to offer the ability to store the contents of 2 160K disks. Over time, it proved unreliable due to compressing the format of the data pack to make it possible to store more data on the same 60 minute cassette.

 

Examples of Coleco made software that spans 2 disks are SmartLetters &  Forms and Richard Scarry’s BEWE, but the overall program sizes are less than 256K so they fit in 1 data pack.

 

Edited by NIAD

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Does the size of the DDP file indicate if you need 1 disk or 2 disk images to create the DDP?

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Just now, videofx said:

Does the size of the DDP file indicate if you need 1 disk or 2 disk images to create the DDP?

Not per say.

 

The actual DDP image file size will always be 256K (discounting the extended format DDPs that I mentioned previously)... this is a standard. However, most DDP images files have far fewer than 256 blocks used and for that matter, less than 160 of actual blocks used. So most DDP image files can be copied safely to a 160K disk image file without fear of any data loss.

 

Where you will run into issues is with programs that are coded to load from a specific drive # like the original Super Games by Coleco. These Super Games also place data/program code throughout the entire data pack and use block load routines instead of filename loading routines.

 

Most of these issues have been addressed in the Software Archive that I and a couple others assembled years ago and is available on www.adamarchive.org or www.sacnews.net/adamcomputer.

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