NGFrankW

Hi, regarding the Atari 400/800 Hardware Manual, Page III.8 and this http://www.atariarchives.org/cfn/12/02/0025.php the bits 0-3 in the PRIOR ($D01B) register controls the priorities of players, missiles and other graphics: Objects with higher priority will appear to move in front of those with lower priority: Bits 0-3 of PRIOR and P/M priorities Bit 3=1 2=1 1=1 0=1 Prio ----------------------------------------------------- C0 C0 PM0 PM0 highest (foreground) C1 C1 PM1 PM1 priority PM0 C2 C0 PM2 . PM1 C3+P5 C1 PM3 . PM2 PM0 C2 C0 . PM3 PM1 C3+P5 C1 . C2 PM2 PM2 C2 . C3+P5 PM3 PM3 C3+P5 lowest (background) BAK BAK BAK BAK priority ----------------------------------------------------- In the chart: PM0..3 = player 0 and missile 0 C0..3 = COLORx, plotted graphics controlled by color register x in the SETCOLOR command. P5 = all four missiles when combined into one player. BAK = the background, known as COLOR4 or color register 4 in the SETCOLOR command. If I want to set all players and missiles into the background I set the value 4 (bit 2) into the PRIOR register. This works as described (ANTIC Mode 0x0E, 160x200 pixels, four colors): (Horizontal stripes are the playfield colors 0-2, the missiles are the four right vertical stripes) But if I enable the fifth player by combining the missiles 0-3, the fifth player is always in the foreground: (The combined fifth player is separated in the four right vertical blue stripes) Have I made something wrong or is there an error in the description of the Atari Hardware Manual ? Perhaps an error in the Altirra emulator ? I will test this on real hardware. Does exist a workaround for this problem ? How can I set the fifth player behind the playfield colors ? Frank PRIORTST.xex

Nice Progress! Have you used the pad2pad autoroute funktion ? I suggest to add also a description like "Corvus Atari Interface, Rev. 1.0" to the silkscreen layer. Perhaps also the part numbers of the IC's. Frank

Great! Do you know where the firmware is stored ? On an eprom or on the hard disk ? Is this updatable without an eprom burner ? I'm very interested Frank

Great! Have you daisy changed your both drives ?

Correct. Like 95% of the Corvus owners I have found some manuals and technical information about the drives here: http://bitsavers.informatik.uni-stuttgart.de/pdf/corvus/ and some (non Atari) software here: http://bitsavers.informatik.uni-stuttgart.de/bits/Corvus/

I have two Corvus drives. One Rev. A with a 20MB HD and one Rev. B with a 6MB HD. Should both revisions work with this interface ? Does anyone knows the differences between these two revisions ? Frank

Have received today my tracking number. Thanks zaxon to finally shipping it Frank

No answer, no SIDE, no money. I have checked Piotr Bugaj's profile several times after my posting in July and know he was at least seven times online. He's just ignoring all inquiries Same problem with the ultrasatan orders: http://atari-forum.com/viewtopic.php?f=27&t=23399&start=50 Frank

Hi Zaxon, please don't forget me. I have ordered and paid one last year (25. October 2011). Have sent you some emails and one PM. I'm still not listed in the public AtariAge order list. Any feedback would be appreciated Best regards Frank