█████████ ███ ███ ███░░░░░███ ░░░ ░░░ ███ ░░░ ██████ █████ ████ ██████ █████████████ ██████ ████████ ████ ██████ ░███ ░░░░░███ ███░░ ░░███ ███░░███░░███░░███░░███ ░░░░░███ ░░███░░███ ░░███ ░░░░░███ ░███ ███████ ░░█████ ░███ ░███ ░███ ░███ ░███ ░███ ███████ ░███ ░███ ░███ ███████ ░░███ ███ ███░░███ ░░░░███ ░███ ░███ ░███ ░███ ░███ ░███ ███░░███ ░███ ░███ ░███ ███░░███ ░░█████████ ░░████████ ██████ █████░░██████ █████░███ █████░░████████ ████ █████ █████░░████████ ░░░░░░░░░ ░░░░░░░░ ░░░░░░ ░░░░░ ░░░░░░ ░░░░░ ░░░ ░░░░░ ░░░░░░░░ ░░░░ ░░░░░ ░░░░░ ░░░░░░░░ =================================================================================================== ### Release info The first ever demoscene release by KittenLabs. Written in C, released at Revision 2026 ### Tech internals Audio playback through UART/Serial link port - 19000Hz @ 8bit PCM, played using DMA-based PWM - real ProTracker/Amiga 4-channel .mod playback - fully async (interrupt-driven) playback, no main loop interaction required - UART being driven in synchronous mode (without start/stop bits) to avoid distortion Grayscale support through timer/interrupt-driven multiplexing - 2-bit grayscale rendering Overclocking through SH7305 CPG/PLL manipulation - CPU clock -> 29 MHz -> 236 MHz - Bus clock -> 29 MHz -> 118 MHz - Battery current increases from ~1mA -> 110mA ### Hardware requirements Hitachi SH-4 CPU required! Won't work on SH-3 CPUs! SH-4 CPUs can be identified by software version "2.02.xxx" (instead of "2.01.xxx") Tested/developed on a (modded) fx-9750GII. Might work on: - fx-9860GII (only the SH-4 variants) - fx-9860GIIs - fx-9860G AU+ (australian model) - Graph 35+E/75+/75+E - Graph 35+/75/95 (only the SH-4 variants) Graph 35+E have different displays (T6K11 rev. 2), untested, might glitch at start/crash. ### Credits Code: Manawyrm, Enfys, juvi ### Third-party credits Fonts: Vexed - Logic Loop Libraries: Lephenixnoir - fxSDK / gint a1k0n - arduboy3d avaneev - lzav jfdelnero - hxcmod SDL2 (for internal PC development version) Music: Jester - dazzler.mod xneko: Masayuki Koba ### Notes DSD/"1-bit DAC" audio playback would've been easily possible in software but the output driver/serial hardware of the Casio seems to have very low drive strength / slow rise times. Using a DSD-routine resulted in very poor audio.