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- 01:08, 19 August 2026 Z80 bankswitching (hist | edit) [4,050 bytes] Furrtek (talk | contribs) (Created page with "The Z80 can only natively address 64kiB of memory because of its 16-bit address bus. To overcome this limit, bankswitching is provided in cartridges and CD systems. =Operation= A standard of four bankswitching windows are available. The $0000 to $7FFF range is fixed to the first 32kiB of M1 ROM, and $F800~$FFFF to Z80 RAM. All windows allow an 8-bit bank selection. {|class="wikitable" !Z80 port !Window address !Size !Bank range |- |$08||$F000~$F7F...")
- 08:57, 9 July 2026 Non-PCM games (hist | edit) [1,025 bytes] Furrtek (talk | contribs) (Created page with "Early games that don't use combined ADPCM-A and ADPCM-B V ROMs (no {{Chipname|PCM}} chip): * Baseball Stars Professional * Blue's Journey * Cyber-Lip * Ghost Pilots * League Bowling * Magician Lord * NAM-1975 * Ninja Combat * Puzzled * Riding Hero * The Super Spy * Top Player's Golf =PCMization= It may be desirable to "PCM-ize" these games for converts or emulation. This is not a very simple and straighforwa...")
- 07:36, 9 July 2026 YM2610 ADPCM bus (hist | edit) [2,505 bytes] Furrtek (talk | contribs) (Created page with "The YM2610's accesses to the ADPCM V ROM(s) are made via dedicated multiplexed buses, which for some reason don't have both the exact same address bit mapping. This method saved pins on both the YM2610 chip and the cartridges. The {{Sig|SDRMPX|SDRMPX}} and {{Sig|SDPMPX|SDPMPX}} signals are used to control latches or the {{Chipname|PCM}} chip in cartridges to demultiplex addresses. When {{Sig|SDROE|SDROE}} or {{Sig|SDPOE|SDPOE}} go low, SDRAD* and SDPAD* carr...")