For Sinclair ZX Spectrum 48K and 128K (48K mode only)
Multiface 1 enables you to store ANY program at ANY point and SAVE it onto ANY media - disk, tape, cartridge, wafer.
It has a unique MULTI TOOLKIT to study/modify programs - you can PEEK/POKE every single byte in Spectrum including Z80 registers, customise programs, put in infinite lives, open a window and edit - with full on - screen editing - whole blocks of RAM in decimal, hex or even ASCII (to reveal any text in programs), etc.
Each Multiface has an 8K ROM & 8K RAM, needs NO additional software, takes NO part of Spectrum RAM, is FULLY AUTOMATIC and 100% reliable - just
1) press the Multiface button
2) select a function - return to program, save, toolkit, jump to an address instead of returning, copy to printer
3) input a name for saving
4) select saving destination - tape, disk, etc. and choose to save program or screen only.