There are hardware reasons for why a ps5 wouldn't be able to use a ps3, 2, or 1 game. You'd need a whole separate set of disk readers for that and optical drives as well. Ps4 disks hardly have anything on them other than a drm unlock code so that's just bullshit goin on right there.
Blu Ray drives can read CD-ROM and DVD-ROM disk, which is what previous consoles use. There is a special copy protection behavior, but PS3 drive firmware incorporates this, and so it is very possible.
Actually, they can't! The laser assembly is completely different between CD, DVD, and BD. You probably concluded this because popular bluray drives on the market also include the hardware to read other kinds of disks. The disk drive Sony uses in the PS5 supports BD and DVD, but not CD.
This was a choice by Sony as nearly all commercial drive have both. Usually DVD and CD optic are combined as one unit as well. Do combination BD/DVD optic exist? Otherwise I do not understand a reason to not use a combined CD/DVD unit.
Red book CD-ROM audio does not require license to play, so I am not sure. Looking at a photo of the assembly it looks like there are one lens on some unit and two lens on other, so it must be a BD/DVD combination unit from some supplier and separate from other.
There are hardware reasons for why a ps5 wouldn't be able to use a ps3, 2, or 1 game. You'd need a whole separate set of disk readers for that and optical drives as well. Ps4 disks hardly have anything on them other than a drm unlock code so that's just bullshit goin on right there.
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Blu Ray drives can read CD-ROM and DVD-ROM disk, which is what previous consoles use. There is a special copy protection behavior, but PS3 drive firmware incorporates this, and so it is very possible.
Actually, they can't! The laser assembly is completely different between CD, DVD, and BD. You probably concluded this because popular bluray drives on the market also include the hardware to read other kinds of disks. The disk drive Sony uses in the PS5 supports BD and DVD, but not CD.
This was a choice by Sony as nearly all commercial drive have both. Usually DVD and CD optic are combined as one unit as well. Do combination BD/DVD optic exist? Otherwise I do not understand a reason to not use a combined CD/DVD unit.
All I know is the PS4 and PS5 can play DVD movies, but will reject audio CDs. Perhaps it's some kind of licensing issue.
Red book CD-ROM audio does not require license to play, so I am not sure. Looking at a photo of the assembly it looks like there are one lens on some unit and two lens on other, so it must be a BD/DVD combination unit from some supplier and separate from other.