Posted By
MMS
on 2011-05-05
14:53:01
 |  Re: Bitmap colors'reversed nibbles
Haha, really strange!
In fact it is exactly described in the Plus/4 Programmers Reference Guide on P.223
It is visible I have never programmed 320x200 gfx in assembly 
Reason: initial design/concept mistake, not corrected afterwards.
(similar to C64 + 1541 speed issue due to HW bug, 80% speed decrease, we see normal now)
-Why we have only one shade for black, and not 8, like the other colors?
-Why we have two fixed colors in multicolor for the whole screen?
-Why only 2 sound channels not eg. 3 or 4? (could make C64 music transfer much easier).
2 independent volume registers with 4-4 bits for each channel would be a dream for any tracker
Few concept failures. nothing fatal, just little annoying, seeing the lost chances.
The fixed +4 programs built into BOM and too high starting price became fatal.
(And the missing numeric keyboard, made impossible to sell +4 as a professional computer.)
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