Main Channel Viewer Example

mainchannel_1.gif (18456 bytes)

The Main Channel Viewer dumps the specified sector in both hex and ASCII. The "Sector Info:" field identifies the sector type automatically. In this example, we have CD-XA, Mode 2 Form 1.

The ROM sync field is indicated by the first twelve bytes highlighted in green: "00 FF FF FF FF FF FF FF FF FF FF 00"

The cyan field that follows is the ROM header, which shows the ATIME for this sector is 65:29:01. The final digits of this field indicate the mode: 02.

The subheader field is the next 8 bytes, and is indicated in green.

The yellow area is the user data as displayed in hex, while the ASCII equivalent can be seen on the right side in white.

mainchannel_2.gif (21412 bytes)

We've scrolled the Main Channel Viewer display down to the end of the sector. The yellow area is the end of the 2048 bytes of user data. The magenta field is the EDC and the cyan field is the ECC for the third layer error correction.

With the Scramble checkbox, you can apply the ROM scrambling to the sector. This is useful when examining a sector that had been incorrectly recorded with the scrambling step omitted - which was common on older CD-I discs.

The Reprocess checkbox lets you choose whether you'd like to see the data as uncorrected or corrected using the third layer error correction.

The checkbox for Hex Offsets controls the byte numbering in the left column. In this example we're using decimal offsets.

The check mark to the left of "Layered errors" indicates that any 3rd layer errors would be highlighted using inverse video. This box is set automatically by the Main Channel Viewer based on whether it is using audio or ROM reads to recover the data from the drive.

The "Change Colors" button leads you to a screen for customizing the colors that indicate the fields, such as sync, header, user data, etc.

"Export" lets you save this data in an ASCII readable format for later viewing in a utility such as Notepad, or embedding it into an email.