Alternatives to NIOS

http://nibz.googlecode.com VHDL, no software yet, still in optimization phase for logic area minimization.

Currently >280 min. LEs on MAX II. (16 bit) (23% of 1270)

Many compile warnings.

Fully parametric from 5 bit to n bit.

17 operations, all single memory access, supports late read.

No interupts at present.

Optimized for stack style programming, direct threaded code.

BSD licence.

5 register model. double word shift left support.

2 stacks, program counter, and 2 working registers.

Supports WISHBONE Classic Timing when RRD_I = '0'.

Supports late reads when RRD_I = '1'.

Support little-endian half width data transfer using HLF_I multiplexer

Secondary DMA port

Interrupt strategy and timing slack options in development

Any comments welcome.

Get dac2.vhd for FREE, phase ultrasonic 1 bit DAC (16 bits in) from the nibz homepage. Does not yet use DMA bus.

Plans for future:

Various I/O

SDK

UFM and Video

Spectral and Wave Table Audio Synthesis

Reason d'etre:

Open Mini PC (OxPx) resource disenfranchisement