Close

lock signals

A project log for Jelly

A minimal DIY 8-bit CPU made with TTL chips, to perform native brainfu*k language, extended to use three sequential access tapes.

Alvaro BarcellosAlvaro Barcellos 08/20/2022 at 02:550 Comments

Most of opcodes of brainfunk are simple sequences of simple states, that could be mixed using OR, also  to select and enable  buffers.

But for  '[' and ']'  need know a result of a test if value is zero and change the behavior from 'execute' to 'search'.

Jelly does it by using  pages on eeproms, with diferent set of finite states. Simple as turn on a bit, but not.  

Pages are mapped with high byte of eeprom, (in a at28c16 uses a8-a10 for 8 pages) and some logic must set and unset this bits.

------------------------------- paused, will continue

Discussions