User contributions for Fiskbit
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11 August 2023
- 06:0806:08, 11 August 2023 diff hist +18 m Nintendo header Adds a References header. current
19 July 2023
- 22:0022:00, 19 July 2023 diff hist +833 CPU Test Mode Adds more 2A03G/H test pin information.
6 June 2023
- 20:2320:23, 6 June 2023 diff hist +184 PPU palettes →Palettes: Some formatting improvements.
17 May 2023
- 19:3219:32, 17 May 2023 diff hist +476 EXP pins Adds SFEAM expansion audio module.
16 May 2023
- 09:5809:58, 16 May 2023 diff hist −16 m INES Mapper 170 Removes bizarre mention that the game using this mapper is non-pornographic. current
2 May 2023
- 01:5001:50, 2 May 2023 diff hist −152 PPU sprite evaluation Removes a dead link that also isn't on archive.org. The creator of the linked content doesn't appear to be active anymore. current
25 April 2023
- 00:3700:37, 25 April 2023 diff hist −1 Programming UNROM Fixes and improves the example code comments.
23 April 2023
- 07:5307:53, 23 April 2023 diff hist −2 m NTSC video Replaces 'colour' with 'color' for consistency and searchability.
22 April 2023
- 23:3223:32, 22 April 2023 diff hist +1,156 Family Computer Network Adapter Adds a controller layout and a link to a page with images of the modem and controller. current
16 April 2023
- 23:0323:03, 16 April 2023 diff hist +1,582 CPU memory map More address space details and caveats. Clearer formatting.
13 April 2023
- 06:3506:35, 13 April 2023 diff hist −1 APU DMC →Concept: Changes 'sprite zero' to 'sprite 0' for consistency and thus searchability. Minor changes to wording for slightly better flow.
- 06:2906:29, 13 April 2023 diff hist +233 Glossary →S: Changes 'sprite zero' to 'sprite 0' for consistency and thus searchability. Improves the definition. current
- 06:2206:22, 13 April 2023 diff hist −6 PPU rendering →Cycles 1-256: Changes 'sprite zero' to 'sprite 0' for consistency and thus searchability.
- 06:2006:20, 13 April 2023 diff hist +4 PPU OAM Changes 'sprite zero' to 'sprite 0' for consistency and thus searchability.
31 March 2023
- 04:3804:38, 31 March 2023 diff hist −263 PPU registers →Note: Tokumaru's quad-write code is now hosted on the PPU scrolling page.
- 04:3704:37, 31 March 2023 diff hist +621 PPU scrolling Adds tokumaru's 2006/2005/2005/2006 code with teaching-oriented edits. Received permission from tokumaru to host this on the wiki as public domain.
26 March 2023
- 01:2501:25, 26 March 2023 diff hist +191 Tricky-to-emulate games Notes Arkista's Ring crash when using NESRGB or Hi-Def NES.
25 March 2023
- 03:1803:18, 25 March 2023 diff hist +26 PPU registers →OAM DMA ($4014) > write: Purging yet another use of even/odd CPU cycle terminology in favor of get/put.
22 March 2023
- 18:1018:10, 22 March 2023 diff hist 0 m Port test controller Fixes typo. current
- 13:5213:52, 22 March 2023 diff hist +2,095 N Port test controller Adds page documenting port test controller. Thanks to lidnariq for much of this information.
12 March 2023
- 11:1211:12, 12 March 2023 diff hist +4 m Expansion Port Sound Module →Caveat and workarounds: Link to DMA page.
- 11:0411:04, 12 March 2023 diff hist +12 m Expansion Port Sound Module →Caveat and workarounds: Clarifies we're talking about any write cycle, not write instruction or EPSM write.
7 March 2023
- 03:1203:12, 7 March 2023 diff hist +140 DMA →Bugs: UA6527P-based clones have different bug behavior because the sample ends 1 APU cycle later than official CPUs.
3 March 2023
- 02:2802:28, 3 March 2023 diff hist +13 DMA →Register conflicts: Notes newest findings regarding behavior on PAL. None of this matches what I expected and I no longer have a guess as to how PAL works.
2 March 2023
- 20:5920:59, 2 March 2023 diff hist +131 APU →Status ($4015): More details about open bus on bit 5.
- 10:0310:03, 2 March 2023 diff hist +252 APU →Status ($4015): Notes (lack of) impact of reads on open bus.
26 February 2023
- 08:3708:37, 26 February 2023 diff hist −42 NES 2.0 submappers →004: MMC3: More MMC3A/C renaming. current
- 02:2002:20, 26 February 2023 diff hist +6 NES 2.0 submappers →004: MMC3: Renames MMC3C submapper to Sharp MMC3 and MMC3A to NEC MMC3.
24 February 2023
- 16:5616:56, 24 February 2023 diff hist +98 MediaWiki:Loginprompt Makes the start of the prompt perhaps more attention-grabbing and obviously about registration. Adds forum and Discord links. current
23 February 2023
- 15:3215:32, 23 February 2023 diff hist +86 Talk:FDS disk format Forgot to add message signature. current
- 15:3215:32, 23 February 2023 diff hist +536 Talk:FDS disk format Disk version / price discussion.
- 00:4300:43, 23 February 2023 diff hist −861 FDS disk format Updates disk info block: Adds J 'Game type' (Nomura no Famicom Trade). Changes 'Price' to 'Disk version'. Marks field $18 as unknown (all $00's). Changes 'Disk type' to 'Disk type (FMC)', as this is 1 only for FMC blue disks (all but Risa no Yousei Densetsu). Adds 'Disk type (other)' field. Removes 'Price' section, which seems to have no backing.
19 February 2023
- 01:5201:52, 19 February 2023 diff hist +104 Emulator tests Adds a warning box about dead links and directs people to those tests on GitHub. We're still figuring out how to improve this page going forward.
15 February 2023
- 12:2812:28, 15 February 2023 diff hist +19 Cycle reference chart Updates PAL OAM write window to match newest findings. Exchanges 'even/odd' cycle terminology for 'get/put'.
- 12:1812:18, 15 February 2023 diff hist +236 PPU OAM →Dynamic RAM decay: org's analysis of PAL forced OAM refresh matches testing in Sour's thread: refresh begins on scanline 265.
13 February 2023
- 11:4611:46, 13 February 2023 diff hist +248 CPU variants Notes that DMC status bit is cleared 1 APU cycle late on UA6527P, TA-03NP1, (T)1818P, UM6561-2. Other clones untested.
- 11:1411:14, 13 February 2023 diff hist +167 PPU variants Notes that UA6561 emphasis is much stronger than normal. Notes that MC-P-502 die shot matches UA6538. Thanks to Eugene.S for this information.
- 08:4208:42, 13 February 2023 diff hist −11 NES 2.0 For CPU/PPU timing, the listed chip should be the UA6538 PPU, not the UA6527P CPU. Thanks to Eugene.S for identifying this.
- 04:4704:47, 13 February 2023 diff hist +287 Glossary Adds backdrop, palette RAM. Modifies CGRAM, CHR, CIC, CIRAM, CL, IRQ, PRG, SL, VRAM. Removes BFT.
11 February 2023
- 05:4005:40, 11 February 2023 diff hist +180 PPU variants Notes UM6561AF-2 bug. Thanks to Eugene for making me aware of it and that F and BF are unaffected.
- 05:2505:25, 11 February 2023 diff hist +358 CPU variants UM6561xx-2 updates. F is suspected to be the first revision. Eugene reports F has correct duties. Notes my findings regarding AF DMC and illegal instruction behavior.
7 February 2023
- 03:2603:26, 7 February 2023 diff hist +193 6502 assembly optimisations →BIT trick: Notes that you can also do this with the zero page version. Notes the caveat that this can trigger register read side-effects.
6 February 2023
- 12:3412:34, 6 February 2023 diff hist +527 Controller reading code Replaces even/odd cycle terminology with get/put. Adds more relevant caveats. Links to new DMA page.
- 03:4403:44, 6 February 2023 diff hist 0 Detect TV system Polling $2002, not $2001. current
3 February 2023
- 01:4601:46, 3 February 2023 diff hist +14 Sprite size Adds Zelda II to list of games using sprites as a right-side column disable. current
1 February 2023
- 03:5903:59, 1 February 2023 diff hist +22 m INES Mapper 003 Fixes nescartdb link.
30 January 2023
- 07:2807:28, 30 January 2023 diff hist +102 MK5060 pinout The Hong Kong Famicom actually uses a different chip. current
25 January 2023
- 00:3800:38, 25 January 2023 diff hist +22 Color $0D games Adds Castelian to the list.
23 January 2023
- 17:1717:17, 23 January 2023 diff hist −45 PPU palettes Removes link to the now-deleted Chinese version of the page, which was almost entirely English.
- 17:1717:17, 23 January 2023 diff hist −38 PPU OAM Removes link to the now-deleted Chinese version of the page, which was almost entirely English.
- 17:1717:17, 23 January 2023 diff hist −67 PPU attribute tables Removes link to the now-deleted Chinese version of the page, which was almost entirely English.
- 17:1717:17, 23 January 2023 diff hist −52 PPU Removes link to the now-deleted Chinese version of the page, which was almost entirely English.
21 January 2023
- 04:1104:11, 21 January 2023 diff hist −113 User:Tepples/President Removes inappropriate content.
17 January 2023
- 21:2521:25, 17 January 2023 diff hist +42 NES 2.0 Mapper 320 Adds register address ranges to register titles. current
- 20:4220:42, 17 January 2023 diff hist +1 m NES 2.0 Mapper 409 Typos and wording.
15 January 2023
- 02:2402:24, 15 January 2023 diff hist +1,788 N User talk:Qalle Request to stop using special characters: × – …
7 January 2023
- 20:0420:04, 7 January 2023 diff hist +94 m DMA Summary section: Notes that failed halts delay to the next *CPU* cycle. Attempts to clarify DMC DMA behavior (failed halts delay to the next CPU cycle).
- 12:2812:28, 7 January 2023 diff hist +131 DMA Adds a reference to lidnariq's post explaining joypad clocking on RF Famicoms.
6 January 2023
- 23:3523:35, 6 January 2023 diff hist +39 DMA Removes ambiguous 'happens' wording. Clarifies in the summary what kind of cycle we're talking about (though it's always CPU cycles when absent a descriptor).
- 17:4517:45, 6 January 2023 diff hist +125 DMA Adds link to BreakingNES analysis of the DMA circuit.
- 11:0111:01, 6 January 2023 diff hist +34 DMA Clarifies that there are two DMA units. Clarifies that the 6502 core itself ignores halts if it's writing.
- 09:1309:13, 6 January 2023 diff hist +27,606 DMA Replaces DMA article stub with detailed DMA behavior writeup. There are still some edge cases to test and 2A07 behavior to verify, but it's largely complete.
24 December 2022
- 23:4123:41, 24 December 2022 diff hist +468 Demo Vision Notes the not-yet-understood shared reset cable and the behavior of the Game Boy vs GB Pocket power switches. current
- 05:2005:20, 24 December 2022 diff hist 0 m CPU variants Fixes formatting.
- 05:1305:13, 24 December 2022 diff hist +1,890 Demo Vision New findings from the rev A firmware.
23 December 2022
- 09:2909:29, 23 December 2022 diff hist +46 m FamicomBox Minor clarity improvements.
20 December 2022
- 10:1310:13, 20 December 2022 diff hist +72 EXP pins →Expansion Port Sound Module (EPSM): Notes EXP2 and 9 in text description.
7 December 2022
- 10:4810:48, 7 December 2022 diff hist +135 Family Computer Network Adapter →Controller: Clarifies controller section ('extends' implies compatibility with the standard controller). Adds note about post-report reads.
6 December 2022
- 11:1811:18, 6 December 2022 diff hist +23 TV-NET controller The Universal no My Trade controller is the same as the Daiwa one aside from branding. current
2 December 2022
- 13:2213:22, 2 December 2022 diff hist +25 N Demo Boy II Demo Boy II is approximately the same as the Demo Vision. current Tag: New redirect
- 10:0610:06, 2 December 2022 diff hist +1,268 Demo Vision Adds power and Game Boy pinouts. Notes that Game Boy 'power' control is actually /reset control.
- 06:1606:16, 2 December 2022 diff hist +128 Demo Vision →Hardware configurations: Adds the PCB colors and note about rev B PCBs.
27 November 2022
- 01:2201:22, 27 November 2022 diff hist 0 Demo Vision →Software: Corrects DIP switch time setting (7 minutes, not 8).
23 November 2022
- 04:1904:19, 23 November 2022 diff hist +130 Coconuts Japan Pachinko Controller Notes dial range (~90 degrees). Improves section on conversion rate and multiple conversions in a single pass.
- 02:5002:50, 23 November 2022 diff hist 0 Coconuts Japan Pachinko Controller Fixes read output address.
22 November 2022
- 06:2306:23, 22 November 2022 diff hist +267 Coconuts Japan Pachinko Controller Adds PCB images.
- 06:1406:14, 22 November 2022 diff hist +112 N File:Coconuts Japan Pachinko Controller PCB 4.jpg PCB image of the Coconuts Japan Pachinko Controller. Image by Fiskbit current
- 06:1306:13, 22 November 2022 diff hist +112 N File:Coconuts Japan Pachinko Controller PCB 3.jpg PCB image of the Coconuts Japan Pachinko Controller. Image by Fiskbit current
- 06:1306:13, 22 November 2022 diff hist +112 N File:Coconuts Japan Pachinko Controller PCB 2.jpg PCB image of the Coconuts Japan Pachinko Controller. Image by Fiskbit current
- 06:1306:13, 22 November 2022 diff hist +112 N File:Coconuts Japan Pachinko Controller PCB 1.jpg PCB image of the Coconuts Japan Pachinko Controller. Image by Fiskbit current
21 November 2022
- 06:2006:20, 21 November 2022 diff hist +11 Coconuts Japan Pachinko Controller Adds the model code.
- 06:0906:09, 21 November 2022 diff hist +4,337 Coconuts Japan Pachinko Controller Rewrites the Pachinko Controller page with new findings. (Thanks to lidnariq for his substantial help understanding the hardware.)
- 05:5205:52, 21 November 2022 diff hist +48 N Coconuts Pachinko Fiskbit moved page Coconuts Pachinko to Coconuts Japan Pachinko Controller: Moving to match the full name of the controller current Tag: New redirect
- 05:5205:52, 21 November 2022 diff hist 0 m Coconuts Japan Pachinko Controller Fiskbit moved page Coconuts Pachinko to Coconuts Japan Pachinko Controller: Moving to match the full name of the controller
20 November 2022
- 12:2512:25, 20 November 2022 diff hist +379 m Emulator tests Reverted edits by Fiskbit (talk) to last revision by Rainwarrior Tag: Rollback
19 November 2022
- 03:0403:04, 19 November 2022 diff hist −379 m Emulator tests Reverted edits by Rainwarrior (talk) to last revision by Lidnariq Tags: Rollback Reverted
17 November 2022
- 04:1204:12, 17 November 2022 diff hist +7,568 Expansion Port Sound Module Adds detailed information on OUT toggle workarounds to safely write to the EPSM.
14 October 2022
- 00:3600:36, 14 October 2022 diff hist +960 MMC1 Moves the shift register explanation, examples, and consecutive writes part of Registers into their own section, organized in a way that should improve clarity. Improves the explanation. Adds reset examples.
13 October 2022
- 15:0515:05, 13 October 2022 diff hist +93 MMC1 →Load register ($8000-$FFFF): Adds note to Load register about D0 being ignored on consecutive-cycle writes.
3 October 2022
- 20:1520:15, 3 October 2022 diff hist +100 FamicomBox Adds arrows on joypad D3 and D4 (not sure if there was a reason these were missing). Notes at port pinouts that J2 D3 and D4 can be disabled with DIP switch 10. Rephrases $4017R DIP switch note.
27 September 2022
- 10:3210:32, 27 September 2022 diff hist −159 PPU variants Removes the RP2C03G. There is no evidence this chip actually exists. Very few mentions online, possibly stemming from a typo long ago. Happy to add this back if anyone can support its existence at all.
26 September 2022
- 08:1208:12, 26 September 2022 diff hist −9 CPU variants Confirmed that later 2A03G's have an additional DMC bug (introduced sometime 1989-1991). (Thanks to Lockster for running dmc_dma_implicit_stop_test on multiple CPUs in the same system.)
22 September 2022
- 08:4208:42, 22 September 2022 diff hist +34 EXP pins →CopyNES: More detail on CopyNES EXP0 operation.
21 September 2022
- 06:3106:31, 21 September 2022 diff hist +4 EXP pins Fixes pinout typo.
- 06:3106:31, 21 September 2022 diff hist +2,317 EXP pins Adds INL cartridge information and expands on the INL expansion audio dongle.
17 September 2022
- 07:0407:04, 17 September 2022 diff hist +2 User:Fiskbit →NES-001: Pedantic edit to rev 01 board, which has 01 on the board, but not explicitly in the board name.
13 September 2022
- 01:5701:57, 13 September 2022 diff hist +130 CPU variants Adds links. Improves pin 30 and DMC DMA notes.
10 September 2022
- 23:0523:05, 10 September 2022 diff hist −1,144 CPU Test Mode Removes the 2A03 PIT information (now on its own page). Notes 2A03 pin 30 does nothing.
- 22:5422:54, 10 September 2022 diff hist +4,984 N RP2A03 Programmable Interval Timer Adds a page dedicated to the nonfunctional RP2A03 PIT. Expands significantly on content previously on CPU Test Mode page. (Thanks to lidnariq for all the help getting this content together.)
7 September 2022
- 09:3409:34, 7 September 2022 diff hist +120 TV-NET controller P/T switch purpose, minor improvements.
