McDreamcast wrote:Silly question, but when these homebrew games get released on discs, I assume they are on a regular CD, correct? Does this not affect the lasr of the Dreamcast?
The discs will be pressed on CD's.
The question whether this affects laser longevity has been asked many times over the years. As far as I can tell, all experts (other Dreamcast developers, Adam Koralik and others) agree that this has no negative impact
on your Dreamcast's laser or any other component.
If anything, a pressed CD should be even better for your Dreamcast than a GD, because the data density is lower (meaning wider data lines, meaning a lower chance of read errors).
mistamontiel wrote:^ I'm curious to know too , what brand ? er they're pressed , not burnt , difference ?
I don't actually work in CD manufacturing, but as I understand it, it is as follows:
In pressed discs, the data is physically pressed or molded into the material, and then coated with a reflective layer (aluminium I believe), followed by a protective clear layer. Brand names don't apply here.
Burnt discs (CD-R's) are produced in a similar way, but lack physically shaped data and instead contain a dye that is chemically changed by the laser that writes ("burns") the data onto the disc. Different brands use different dyes, and combined with other minor differences in their manufacturing processes, this leads to varying qualities.
CD-R's are much less durable than pressed CD's. The laser that reads a CD-R may also write to it ever so slightly. So does sunlight. Heat and oxygen may also cause the dyes to change their chemistry. Sometimes this effect is clearly visible in the form of discoloured patches or edges.
So while your Dreamcast shouldn't have any problem reading pressed CD's, old CD-R's that have faded over time are a different story.