Activity

From 05/03/2018 to 06/01/2018

AD 10:46 AM Bug #64 (Closed): Pokey pdm timing incorrect: Seems to run fine, Acid now passes again as far as I can tell. admin
FO 08:24 AM Bug #64: Pokey pdm timing incorrect: Been checking on the scope. The one cycle delay looks correct.
Some jitter issues due to when I activate pokey. I was doing so on the memory access completion, but this really varies too much when accessing SDRAM and block RAM. So I've ... foft
AD 10:42 AM Bug #67 (Resolved): Pokey two tone timing problem: An old bug.. See http://atariage.com/forums/topic/228527-pokey-emulation/page-3#entry3060595
10 P=53760
20 POKE P+8,64
30 POKE P+1,10+32
31 POKE 53775,11
40 POKE P,20
50 GOTO 50
high pitched, low pitched on real Atari admin

FO 10:07 PM Bug #64: Pokey pdm timing incorrect: Tried a 1 cycle and a half cycle delay on the input to the xor. Neither are seeming quite right, but 1 cycle delay is closest... foft
FO 08:21 PM Bug #64: Pokey pdm timing incorrect: Phaeron got a scope on it:
http://atariage.com/forums/topic/244946-using-pulse-density-modulation-for-8-bit-pcm/page-7#entry4036484
Looks to be high pass filter propagation delay related. foft

FO 09:52 PM Bug #66: Odd flash behaviour on new boards: Gathering ids on other boards in case I need to switch on that: [[Flash_chip_by_board]] foft
FO 09:49 PM Bug #6: HDMI audio poor quality: # Is the time between this always the same? If so can dIs the sound quality poor because I removed the divide?
# If so, does the divide happen at a consistent period? If so I can scale/multiply then divide by power of two.
# Or is the ... foft

FO 09:11 PM Bug #66 (Closed): Odd flash behaviour on new boards: Ensure that the new flash chip is stable with the existing firmware strategy. It has some hybrid 64k/4k sector option or a 256k sector option. From Panos' reports it seems to behave well when I treat it as a 256KB sector device and oddly... foft

FO 06:31 AM Feature #65: Implement ATA to SPI bridge: Above was info from flashjazzcat on the forum foft
FO 06:30 AM Feature #65: Implement ATA to SPI bridge: I need to prepare a document outlining the minimum requirements of IDE emulation since I'm explaining the same thing in multiple locations at the moment. ;) Absolute minimum requirement is the 8 basic IDE registers, and it's useful to be... foft

SA 08:52 PM Feature #65: Implement ATA to SPI bridge: foft wrote:
> There is plenty of software for the Atari which accesses ATA hard drives via a simple register interface. Find out what this interface is and wire it up to the SD card directly. So its possible to use it like the compact f... sadosp
FO 08:44 PM Feature #65 (New): Implement ATA to SPI bridge: There is plenty of software for the Atari which accesses ATA hard drives via a simple register interface. Find out what this interface is and wire it up to the SD card directly. So its possible to use it like the compact flash in an inco... foft

FO 10:04 PM Bug #64 (Closed): Pokey pdm timing incorrect: See
http://atariage.com/forums/topic/244946-using-pulse-density-modulation-for-8-bit-pcm/page-3#entry4025673
So white on black is currently good, while black on white should be better. Seems related to the rise/fall times... foft

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