From: dark@microsoft.com (Dar Korra'ti)
Subject: Productivity mode problem.
Date: 21 Jul 92 03:39:20 GMT
Organization: Microsoft Corporation
Summary: Productivity mode hates colour 0 not being 0/0/0
Followup-To: dark@microsoft.com
Reply-To: dark@microsoft.com
Keywords: A1250, 3.5M AdRAM, 68000, 2.04 ROM, ECS Agnus/Denise (1MChip)

[]

     Weird problem:
     Just got the ECS chipset for my rev 5 motherboard A1250. (Okay, an
A500. But it's got a detatched keyboard, Zorro II slots, lots o' ram, a
2091, and lives in a tower case. I figure that counts. :-) ) Everything
works great, 1M chip RAM, all video modes - _except_ productivity.
     I have a Mitsubishi DiamondScan, that's not the problem. :-)
     Here's the weirdness: if pen 0 is black (0/0/0), then everything
works exactly as advertised. However, if I start remapping pen 0, it
appears to act as an inverted controller for pen 2, and all the other
colours start to fade out. It never really comes up from black, either.
This is all from Workbench.
     It gets stranger: if I drag down Workbench to reveal some other
screen (I have my coersion set to avoid flicker), that screen appears,
and _at the top of the screen_, everything is exactly as expected.
However, as the screen scrolls down, pen zero - and the other pens -
fade to black.
     Two-colour mode does the same thing, but with pen 1 being altered
instead of pen 2.
     I don't get this. I doubt it's Denise, as the other "productivity
mode in drag" modes - SuperHires, which I _love_, god, just get me a
deinterlacer that works with it - work just fine.
     Anyway. Here's the complete spec set on my Amy:
     A500 Rev 5 motherboard; 512K on the motherboard, 3 meg on an
AdRAM 540. ECS Agnus and Denise; Agnus is in 1 meg mode. 1 floppy
drive. Two Zorro II slots (salvaged from an abandoned SubSystem).
Hard drive is a 52m Quantum (SCSI - but then, what else would it
be?). Power supply is a BigFoot 200W. Cable was made for me a few
years ago by Redmond Cable; monitor is a Mitsubishi DiamondScan
1381A. Keyboard has been detatched, but yes, I ran shielding.
Motherboard is vertically mounted in a tower case, ports-up, floppy
forward. All ports have been extended with fairly standard cables.
     Oh, yeah; 2.04 ROM; 2.04 WB as well. No funky graphics software.
Modem is a Cardinal 2400. Printer is an HP Series III. I run overscan
through preferences but not extra-big amounts.
     I've noticed weirdness with the blue level control sliders in
Preferences before, but have never followed up; that was with the
old Denise. (Can't duplicate it, even on pen 0, with the new Denise.)
     Replies requested via email instead of to the net, because my
ability to read this group is kind of random...
                                                   - R'ykandar.

PS: Oh yeah - any tools out there to investigate this kind of thing?
PPS: I screwed up JP2 when I installed the 1Meg chip. It's connected,
     and works perfectly, but, well... let's just say I don't breathe
     on it. Anyplace else on the otherboard I can get at that signal?
     Thanks also. :-)

--
R'ykandar Korra'ti | LOW ORBIT PUBLICATIONS
dark@microsoft.com | polari!lorbit!phoenix@uunet.uu.net
Newsgroups: comp.sys.amiga.hardware