Activity

From 06/06/2018 to 07/05/2018

FO 09:44 PM Bug #67: Pokey two tone timing problem: I found if I pokey 53775,11+128 on the Atari then it matches the Eclaire output. Unfortunately forcing the serious output on eclaire to 1 or 0 does not change anything. Still its something to go on! foft

FO 10:03 PM Bug #67: Pokey two tone timing problem: So, errr identical then! Going to have to think about this one...
B is Atari, A is EclaireXL.
!http://www.64kib.com/redmine/attachments/download/82/Screenshot%20from%202018-06-20%2023-02-19.png!
foft
FO 09:57 PM Bug #67: Pokey two tone timing problem: Nope, seems to be some interaction with the noise filtering. I wonder if the delay also needs applying to the pulse from the timer, that then hits the noise filter. foft
FO 09:27 PM Bug #67: Pokey two tone timing problem: A 2 cycle delay on the reset fixes both the 4 cycle and the 9 cycle case.
Now to check this specific example! foft

FO 09:55 PM Bug #67: Pokey two tone timing problem: I was concerned that my clocks were off at first since I was running in VGA mode, but that changes vsync slightly (50Hz vs 4.86Hz) which of course also impacts audio frequency:-) Debugging in RGB mode gives a perfect match. foft
FO 09:54 PM Bug #67: Pokey two tone timing problem: Been measuring cases on the scope...
Confirmed the extra cycle delays described in that forum post on my 600XL. Confirmed missing on the EclaireXL implementation. foft

FO 08:35 PM Bug #67: Pokey two tone timing problem: Related post: http://atariage.com/forums/topic/118448-implementation-of-pokey-2-tone-filter-in-emulation/page-3#entry1449990 foft

FO 09:09 PM Feature #65: Implement ATA to SPI bridge: What is used in set features?
0xef set features, then set feature 1 + lba mode?
Think this can probably be ignored. foft
FO 09:04 PM Feature #65: Implement ATA to SPI bridge: Identify:0xec
0->SCNT,SNUM,CYLL,CYLH
0xa0->HEAD
0xec >STAT
read stat -> if 0 then does not exist! Then wait for BSY to clear and RDQ to set.
read data -> 512 bytes
See above for the interesting bytes from this. foft
FO 08:53 PM Feature #65: Implement ATA to SPI bridge: https://wiki.osdev.org/ATA_PIO_Mode
Probably want at least DRQ(3/ 1=ready), RDY(6 /1=good) and BSY(7/ 0=not busy) in the status reg foft
FO 08:40 PM Feature #65: Implement ATA to SPI bridge: Some links..
https://www.pjrc.com/tech/8051/ide/wesley.html#idereg
http://atariage.com/forums/topic/279232-fujiconvert-01/page-3
Simple read seems to be:
sector address-> 4 lba regs with $e0 in high part
scnt-> 1
stat-> cmd
data... foft
SA 08:32 PM Feature #71: Add support for user firmware updates: foft wrote:
> Add support to load new firmware from sd card. Then it can be applied immediately for testing or flashed.
> ...
:-) sadosp
FO 08:24 PM Feature #71 (New): Add support for user firmware updates: Add support to load new firmware from sd card. Then it can be applied immediately for testing or flashed.
I'd like this to make it easier to build/test new firmware. foft

SA 09:00 PM Feature #70: Add hotkeys for video mode selection: foft wrote:
> I think its on the right windows key, checking...
I have to see keyboard with two windows keys many years now. Please could you add also this to the standard left window key??? sadosp
FO 08:52 PM Feature #70: Add hotkeys for video mode selection: I think its on the right windows key, checking... foft
SA 08:35 PM Feature #70: Add hotkeys for video mode selection: foft wrote:
> + Added 1,2,3,4 for profile switch + load
Marvelous!
So many keys, but still wait for the day to add the fire key on keyboard!
sadosp
FO 08:19 PM Feature #70: Add hotkeys for video mode selection: + Added 1,2,3,4 for profile switch + load foft
FO 08:12 PM Feature #70 (Closed): Add hotkeys for video mode selection: Will release in v24 foft
FO 08:12 PM Feature #70: Add hotkeys for video mode selection: Added something simple...
Press F11 to go to menu.
Then press:
P: PAL
N: NTSC
R: RGB
A: SCANDOUBLE
D: DVI
H: HDMI
V: VGA
S: SVIDEO
C: COMPOSITE
Z: Toggle composite sync
X: Toggle scanlines
foft
FO 08:10 PM Feature #70 (Closed): Add hotkeys for video mode selection: Been meaning to add a simple way to switch mode from keyboard. foft

FO 06:48 AM Bug #64: Pokey pdm timing incorrect: Anyway v23 sounds nice for pdm, reliably. foft
FO 06:47 AM Bug #64: Pokey pdm timing incorrect: The issue was that the write to stimer was now exactly on the enable cycle. I modified the latch delay line to support this. Fundamentally though, this isn’t meant to happen, so perhaps an issue with the pbi implementation is causing the... foft
FO 06:45 AM Bug #69: Some TVs confused by hdmi audio: See video for example
https://photos.app.goo.gl/c3VMPp0XY7nIaJBG3
Not much to go on. Perhaps the clock regen packets are slightly out of spec or perhaps it does not like the sample rate. foft
FO 06:43 AM Bug #69 (New): Some TVs confused by hdmi audio: foft
FO 06:42 AM Bug #6 (Closed): HDMI audio poor quality: foft

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EclaireXL