User contributions for Ulfalizer

6 May 2013

• 09:0909:09, 6 May 2013 diff hist +88‎ APU Length Counter ‎ Constant volume flag was missing, making it look like the volume/envelope field is 5 bits long. Also make consistent with main page by using 'v' instead of 'e'.
• 09:0209:02, 6 May 2013 diff hist +17‎ APU Length Counter ‎ The triangle halt flag was renamed to linear counter reload flag

5 May 2013

• 14:0314:03, 5 May 2013 diff hist +38‎ APU Sweep ‎ Small silencing clarification
• 13:2213:22, 5 May 2013 diff hist +68‎ APU Envelope ‎ Clarify when the envelope counter decrement occurs
• 12:4312:43, 5 May 2013 diff hist +3‎ m APU Sweep ‎ Add an 'is'
• 12:4012:40, 5 May 2013 diff hist +389‎ APU Sweep ‎ Describe exactly when the period update happens and use the internal version of what's going in instead of the "clocked before reload" version (as it isn't any more complicated)
• 12:1112:11, 5 May 2013 diff hist −4‎ m APU Length Counter ‎ Fix typo
• 09:4909:49, 5 May 2013 diff hist +77‎ APU Sweep ‎ Internally, the target period is calculated continuously by the adder
• 09:2809:28, 5 May 2013 diff hist −99‎ APU Length Counter ‎ Ops... the length counter load values in the table are already adjusted to account for the becomes zero vs. is zero behavior
• 08:3808:38, 5 May 2013 diff hist +50‎ APU Length Counter ‎ Clarify that the clock-when-zero silencing behavior works intuitively with the halt flag too
• 08:1008:10, 5 May 2013 diff hist +10‎ m APU Length Counter ‎ s/APU clock/frame counter clock/
• 08:0708:07, 5 May 2013 diff hist +526‎ APU Length Counter ‎ The length counter period might be off by one if you just compare against zero (confirmed in Visual 2A03)

4 May 2013

• 13:5513:55, 4 May 2013 diff hist +1‎ m APU ‎ s/pulse channel/pulse channels/
• 09:0909:09, 4 May 2013 diff hist +504‎ PPU registers ‎ Use fancy-schmancy line drawing characters
• 08:2708:27, 4 May 2013 diff hist +27‎ m APU ‎ Rephrase pulse silencing exceptions a bit
• 08:1608:16, 4 May 2013 diff hist +50‎ m APU ‎ Clarify that channels play iff length counters > 0 in the abstract model
• 08:1008:10, 4 May 2013 diff hist +556‎ APU ‎ Add an overview of when channels will play (bit redundant, but imo justified in this case)
• 07:3307:33, 4 May 2013 diff hist 0‎ m APU Envelope ‎ Missed an s/N/V/
• 07:3007:30, 4 May 2013 diff hist +34‎ APU Envelope ‎ Use V to denote volume/envelope bits to be consistent with main page
• 07:1607:16, 4 May 2013 diff hist +153‎ APU Envelope ‎ Clarify that the constant volume flag only selects the volume source (verified in Visual 2A03)
• 06:2506:25, 4 May 2013 diff hist 0‎ m APU Pulse ‎ Linkify first instead of second mention of envelope
• 06:1806:18, 4 May 2013 diff hist +54‎ APU Noise ‎ Constant volume flag was missing, making it look like the volume/envelope field is 5 bits long. Also make consistent with main page by using 'v' instead of 'e'.
• 06:1406:14, 4 May 2013 diff hist 0‎ APU ‎ Bit field for noise volume/envelope used N while legend used V. Settle for V for consistency with other channels.
• 06:1206:12, 4 May 2013 diff hist 0‎ APU Pulse ‎ Use v to denote volume/envelope bits to be consistent with main page
• 06:1006:10, 4 May 2013 diff hist +62‎ APU Pulse ‎ Constant volume flag was missing, making it look like the volume/envelope field is 5 bits long
• 06:0406:04, 4 May 2013 diff hist +44‎ APU Pulse ‎ Main page says volume/envelope, so do that here too

3 May 2013

• 11:1111:11, 3 May 2013 diff hist +249‎ APU Triangle ‎ The triangle channel's frequency is not limited like the pulse channels' is (confirmed in http://forums.nesdev.com/viewtopic.php?f=3&t=10056&start=15#p111702)
• 06:2206:22, 3 May 2013 diff hist +61‎ APU Length Counter ‎ Old version made it sound like the silencing was optional too
• 06:1806:18, 3 May 2013 diff hist −9‎ APU ‎ "Length counter halt" is more descriptive than "length counter disable" and consistent with the linked subpages for the channels
• 06:1206:12, 3 May 2013 diff hist −22‎ m APU Envelope ‎ Minor clarifications (iiutc the envelope is always ticking, even in constant volume mode)
• 05:5805:58, 3 May 2013 diff hist +23‎ APU Envelope ‎ Be more specific about what C does
• 05:5505:55, 3 May 2013 diff hist +57‎ APU Envelope ‎ Add Wikipedia link for ADSR
• 05:2505:25, 3 May 2013 diff hist +20‎ APU Triangle ‎ Use "linear counter reload flag" instead of "halt flag" to avoid confusion with the length counter halt flag

2 May 2013

• 02:3002:30, 2 May 2013 diff hist +124‎ APU ‎ Clarify why it's called the "linear" counter
• 01:2201:22, 2 May 2013 diff hist +122‎ APU Triangle ‎ The triangle period timer ticks at the rate of the CPU clock
• 01:1701:17, 2 May 2013 diff hist 0‎ m APU Pulse ‎ s/KHz/kHz/
• 01:0101:01, 2 May 2013 diff hist +229‎ APU Pulse ‎ The pulse channels are silenced when t < 8 (confirmed in Visual 2A03, see http://forums.nesdev.com/viewtopic.php?f=3&t=10056&p=111614#p111614)
• 00:5400:54, 2 May 2013 diff hist +55‎ APU ‎ The pulse channels are silenced when t < 8 (confirmed in Visual 2A03, see http://forums.nesdev.com/viewtopic.php?f=3&t=10056&p=111614#p111614)

30 April 2013

• 03:4003:40, 30 April 2013 diff hist +459‎ Talk:APU Sweep ‎No edit summary

29 April 2013

• 05:3005:30, 29 April 2013 diff hist +705‎ N Talk:APU/current ‎ Created page with "Looking at Visual 2A03 and e.g. the sq0_on and sq0_len nodes, it seems that disabling a channel doesn't touch the length counter at all. Rather, there are internal channel ena..."
• 02:1702:17, 29 April 2013 diff hist +43‎ APU Pulse ‎ Make the timer description be closer to the hw reality
• 01:2601:26, 29 April 2013 diff hist +189‎ Talk:APU Pulse ‎No edit summary
• 00:3500:35, 29 April 2013 diff hist +336‎ N Talk:APU Pulse ‎ Created page with "Is the pulse timer simply clocked by CPU/2 ("APU clock") internally? Looks that way in Visual 2A03 (the timer is only 11 bits wide), only I can't get the timer to count down f..."

28 April 2013

• 04:1004:10, 28 April 2013 diff hist +134‎ PPU sprite evaluation ‎ Break out Notes section and add Visual 2C02 link
• 03:5503:55, 28 April 2013 diff hist +384‎ PPU OAM ‎ Add some more sprite zero internals details

26 April 2013

• 16:2316:23, 26 April 2013 diff hist −126‎ Talk:NTSC video ‎ That's a fair point

23 April 2013

• 13:0213:02, 23 April 2013 diff hist +177‎ Tricky-to-emulate games ‎ Add Marble Madness
• 00:4300:43, 23 April 2013 diff hist +70‎ Visual 2C02 ‎ '-' is actually a delay

22 April 2013

• 21:2821:28, 22 April 2013 diff hist +56‎ PPU registers ‎ Monochrome bit has no effect on writes to the palette (maybe obvious - confirmed in Visual 2C02)
• 01:5001:50, 22 April 2013 diff hist −17‎ PPU registers ‎ Clarify that sprite overflow is broken and not merily complex