Someone help me decifer OBD-1 Codes

[NP94B2300]

I have a 1994 Mazda B2300 with the 2.3L. I pulled the codes from the truck. I am uncertain on a few things that hopefully someone can help me with.
When I turn the key on after it goes through the 2 initial sets of 3 blinks I get a 7 then pauses and gives me code 337 then pauses gives me 1 then pauses again and gives me 224,337,224,337. I'm a little confused as to what the relevance of the 7 blinks and the 1 blink are.

Thanks for your help in advance!

[cvar]

http://www.troublecodes.net/Ford/

[NP94B2300]

I found what the codes definitions were but that site doesn't give any reference to the 7 and the 1 that flashed. And also why did the same codes flash multiple times? I'm new to the OBD1 stuff so I'm trying to get an understanding of this stuff.

[cvar]

Um, two blinks of 3 then a 7 is 337.

[NP94B2300]

Somewhere along the lines I read that when you first turn the key on after the fuel pump turns on you get a flash then 2 sets of 3 blinks and then it goes into diagnostics. But even if I misunderstood and the first code is 337 then how come after the first set I get a single blink and then more codes? And also why does it get me the same 2 codes multiple times? I'm sorry for the redundant question but I'm new to this and trying to understand.

Thanks

[NP94B2300]

Ok, so now I have figured out that the DPFE should resolve my 337 code. However after it shows me the 337 code, it pauses and gives me a 1 blink then pauses again and goes through the codes of 337 and 224 twice. What is the single blink that I am getting? Are these memory codes?