This is an old revision of the document!
Technical Specs
CPU
- Hitachi SH-1 32-bit RISC processor clocked at 15 MHz.
The CPU is similar in concept to Thumb instruction set for ARM. Also features 16×16=32 multiplier support and 1kb of On-chip RAM (no instruction/data cache is available unlike SH-2).
RAM
- 512 KB of onboard RAM
BIOS
- 32 KB mask ROM “BIOS” with numerous math, DMA, graphics and printer built-in functions
Graphics and Display
- VDP (Video Display Processor)
Equipped with 128 KB of VRAM. 512 total colors available on the palette, with 256 colors for backgrounds and 256 colors for sprites.
4bpp and 8bpp modes available. The system features both tiled and bitmapped modes ranging from 256×256 to 512×256.
Resolutions
- 256×224 and 256×240 (interlaced resolutions also supported)
Audio
Features 4 channels of PCM sound at 12-bits. Sound samples are stored in a dedicated 512 KB ROM that is read-only. This means developers could only use pre-programmed sound effects and music for games.
Other
The built-in sticker printer is a signature feature of the Loopy, allowing players to create and print custom stickers directly from the console. Games use functions provided by Mask ROM BIOS to make use of the printer.