Still unclear on V12 and "HA" wire

**NoLegs** · 02-13-2006,11:01 PM

I read the definition of what the "HA" wire does, but I guess I'm retarded and just don't get it, so I have a straight foward question:

With this "HA" wire, is a "laser fix" still needed?

**crans** · 02-15-2006,12:33 AM

yess you still need laser fix and to instal the HA wire..

**NoLegs** · 02-15-2006,06:33 PM

Thanks for the response, but if the HA wire is required to be soldered and it's main purpose was to "reduce the occurence of "mechacon crashes" which are the most common cause of laser burnout in v12 consoles as well as reducing the occurence of RSOD" BUT an alternate laser fix is still needed, then I really don't see the point of the wire at all.

Does this not make any sense to anyone else?

**NoLegs** · 02-15-2006,06:49 PM

I found this which defines what the HA wire does without ever defining what the HA wire is.

I like this statement the most I think, "HA allows us to much more accurately patch the PS2 disc authentication data resulting in a lower occurence of Red Screen and mechacon crashes" How do you perform an experiment like that to determine it "lowers the occurance"?

Hey, I think the CC is a great chip, but the mysterious HA wire has sparked my interest and I find it funny that there is no real definition about what this thing does.

**foundmy** · 02-17-2006,05:35 PM

NoLegs: actually, its not what is so mysterious about the HA line, if you remember the first true solution (messiah) was full wire count. this way they can monitor and control the injecting of all lines. then the lower wire count chips came out, they used an algorthim (if this line is doing something and this other line is doing nothing, then insert code or whatever) and that reduced the number of lines. but since they are not monitoring the other lines, (those other lines might be trying to talk to the bus as well) but it didn't matter on the ps2 units back then because there was a bus controller chip but then.... sony got smart took away the ps2 controller bus chip (to save some extra $$$) as i call it (that monitors the traffic on the cd/dvd controller lines) this caused the headaches of the bus getting conjestion and no way to control the flow.

so by adding one more line they (crystal team) feel that it will help in the reduction of this conjestion for patching the controller lines.

Even the originator of the messiah1 has stated that there can be problems with reduced number of lines since you are not monitoring all the lines. this was way before the v8s even came out.

**sooki2kx** · 02-22-2007,01:22 AM

Originally Posted by foundmy

NoLegs: actually, its not what is so mysterious about the HA line, if you remember the first true solution (messiah) was full wire count. this way they can monitor and control the injecting of all lines. then the lower wire count chips came out, they used an algorthim (if this line is doing something and this other line is doing nothing, then insert code or whatever) and that reduced the number of lines. but since they are not monitoring the other lines, (those other lines might be trying to talk to the bus as well) but it didn't matter on the ps2 units back then because there was a bus controller chip but then.... sony got smart took away the ps2 controller bus chip (to save some extra $$$) as i call it (that monitors the traffic on the cd/dvd controller lines) this caused the headaches of the bus getting conjestion and no way to control the flow.

so by adding one more line they (crystal team) feel that it will help in the reduction of this conjestion for patching the controller lines.

Even the originator of the messiah1 has stated that there can be problems with reduced number of lines since you are not monitoring all the lines. this was way before the v8s even came out.

great answer

helped me understand if i still needed the fix or not.. thanks!

**p3nnyw1sd0m** · 03-04-2007,03:36 PM

Is it REALLY neccesary to solder on the HA wire in a V4 US Ps2 as well as the A point? I've been comparing the install diagrams with the DMS4 Pro's and find that the V wire on the DMS is the H wire on the CC2.0. It is used for asian systems(V). Do I need it for US and PAL systems? Please let me know. Any help would be appreciated. I also am not wanting to solder onto the HA point in the V4 for fear of making a bridge and not being able to remove it. >.<
Thanks

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