I have a Personal Laserwriter NT. I am thinking about upgrading the logic board to an NTR, which are cheap on ebay, for two main reasons. Firstly, the NTR has Postscript Level 2 support, which is required to use it with Mac OS X, and secondly I understand that the upgrade would make the printer significantly faster, as it currently is very slow processing graphics and the like. If this is the case it would be very useful for me. (Or is it simply a speed limit of Localtalk?)
However, the NTR board only has a max RAM of 4mb, while my NT board has the full 8mb installed. Would 4mb make the printer worse for anything compared to the 8mb on the NT? Why did they only allow the max to be such a low amount?
Could anyone comment whether the speed of the board is significantly faster? The NT uses a 12MHz 68000 chip, and the NTR uses a 16MHz AMD 29005 chip.
Would PS level 2 improve anything over level 1, apart from OS X support?
Finally what kind of 2MB SIMM would be used to upgrade the NTR from 3MB to 4MB - could I use a standard 4mb 72-pin edo simm (assuming it would only access the first 2mb anyway), or do I need custom Apple RAM?
Thanks
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