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• 23:41, 2 June 2023 Lidnariq talk contribs uploaded File:Casio PV-1000 Rendering Timing.png
• 23:41, 2 June 2023 Lidnariq talk contribs created page File:Casio PV-1000 Rendering Timing.png
• 05:26, 27 May 2023 Lidnariq talk contribs created page Casio PV-1000/Emulation (Created page with "There are two currently-known emulators for the PV-1000. As of 2023 May, both are extremely inaccurate in problematic ways. * MAME * ePV-1000 (Part of Common Source Code emulator system by TAKEDA Toshiya ) [http://takeda-toshiya.my.coocan.jp/pv1000/] Both are problematically inaccurate. Here's a list of what they do wrong: * regF8, F9, FA: square wave channels should be different volumes (fixed in MAME release 254) * regFB: missing mute and ring/XOR modulation support...")
• 02:41, 25 May 2023 Lidnariq talk contribs created page Casio PV-1000/Rendering (Created page with "There are 288 pixels on each scanline. Note that pixel 0 is defined as the start of hsync. During each of the 192 active scanlines, if enabled in the configuration register, the ASIC does the following: BUSREQ is asserted from pixels 20 through 267; the other 40 pixels it's deasserted. The first two pixels are during hsync. While the Z80 asserts BUSACK # the ASIC continuously asserts /MREQ # the ASIC runs the same 8 pixel 4 fetch pattern: TilemapEntry Bitplane Bitpl...")
• 01:26, 24 May 2023 Lidnariq talk contribs uploaded a new version of File:Casio PV-1000 Video Timing (only).png (don't include IRQ timing on this diagram)
• 01:25, 24 May 2023 Lidnariq talk contribs created page File:Casio PV-1000 Video Timing (only).png (no namespaces for files :()
• 01:25, 24 May 2023 Lidnariq talk contribs uploaded File:Casio PV-1000 Video Timing (only).png (no namespaces for files :()
• 19:09, 23 May 2023 Lidnariq talk contribs deleted page Casio PV-1000/ULA pinout (did not want a redirect)
• 19:07, 23 May 2023 Lidnariq talk contribs moved page Casio PV-1000/ULA pinout to Casio PV-1000/ASIC pinout (not an uncommited logic array)
• 19:07, 23 May 2023 Lidnariq talk contribs moved page Casio PV-1000/ULA registers to Casio PV-1000/ASIC registers without leaving a redirect (not an uncommited logic array)
• 03:23, 15 May 2023 Lidnariq talk contribs created page Namco Pac-Man/Video (needs a visual aid, but get some of the technical details in here)
• 01:04, 13 May 2023 Lidnariq talk contribs created page Namco Pac-Man/Memory Mapped I/O (Nothing surprising here, but warrants pedantic description)
• 02:54, 5 April 2023 Lidnariq talk contribs created page Casio PV-1000/Video (Created page with "The PV-1000's video timing divides a frame into 288 pixels horizontally by 262 scanlines. The pixel clock is the crystal divided by 4, or roughly 4.47MHz. This corresponds to an exact pixel aspect ratio of 48:35, or approximately 4:3. This makes the horizontal sync rate the quite-slow 15536Hz and the vertical sync rate the almost-normal 59.299Hz Of those 288 pixels, 224 contain actual video content. These 224 pixels are already significantly wider than the majority of c...")
• 02:33, 5 April 2023 Lidnariq talk contribs created page Casio PV-1000/Controller (Created page with "The Casio PV-1000 Joystick is a 2-axis, 4-button joystick. Pictures are available here: https://commons.wikimedia.org/wiki/Category:Casio_PV-1000_accessories Reading its status is much like one how one reads the buttons on a Game Boy. == Input (port $FD write) == 7 bit 0 ---- ---- xxxx ABCD |||| |||+-- 1: include information about joysticks' "Attack" buttons ||+--- 1: include information about joysticks' up and left directions |+---- 1: in...")
• 01:34, 5 April 2023 Lidnariq talk contribs created page Casio PV-1000/ULA pinout (Created page with " /^\ / \ / \ VCC -- / 1 64 \ ?? ?? ?? ?? / 2 63 \ <- GPI63 Red <- / 3 62 \ <- GPI62 Green <- / 4 61 \ <- GPI61 Blue <- / 5 60 \ <- GPI60 /CSync <- / 6...")
• 06:03, 3 April 2023 Lidnariq talk contribs created page Casio PV-1000/ULA registers (Created page with "The µPD65010G031 ULA has 10 total ports. They are fully decoded, available via Z80 I/O instructions at $F8-$FF. There are eight write-only functions and two read-only functions. === Square 1 ($F8) > write === 7 bit 0 ..PP PPPP || |||| ++-++++--- Period for first square wave. f_square = f_ULA ÷ 1024 ÷ (63-P) ≈ 8739 Hz ÷ (63-P) Where f_ULA is the 17.897727MHz crystal divided by 2. If P is specified to be 63, it instead si...")
• 04:27, 3 April 2023 Lidnariq talk contribs created page Casio PV-1000/Controller port pinout (Created page with "The TJ-1 controllers used by Casio's PV-1000 and PV-2000 uses a Mini-DIN-8. The game expects the controllers to form a 4x4 button matrix, manually scanned by the software. GPI2 ___|___ GND ---8/-O O O-\6--- GPO52 / \ GPO55 ---5|-O O O-|3--- GPO53 \ | / GPI1 ---2]-O | O-[1--- n/c ---|--- | GPO54 The actual mapping of which General Purpose Outp...")
• 04:15, 3 April 2023 Lidnariq talk contribs created page Casio PV-1000/Cartridge connector (Created page with "This diagram represents a top-down looking directly into the connector. The "B" side pins are on the label side of the cartridge. Pin pitch is assumed to be 0.1 inch, but this has not yet been verified. Cartridges are required to have a key cut between 10 and 11. (front) (back) PV-1000 | Cart | PV-1000 ------- +5V -- |B01 A01| -- GND /IRQ -> |B02 A02| -- chassis ground A14 -> |B03 A03| <- A15 A12 -...")
• 04:06, 3 April 2023 Lidnariq talk contribs created page Casio PV-1000 (create a stub)