ZX Spectrum ULA to be made OPEN SOURCE (VHDL)
Posted: 15 Aug 2015 13:02
I've heard the ZX Spectrum's ULA logic is to be made open source as a VHDL file courtesy of Chris Smith https://twitter.com/zxchris
So it should be possible to pop the 144 macrocells of the ZX Spectrum onto an EPM7160SLC84 ? Allowing a very basic ZX spectrum to be built :
Z80 (CPU)
128K SRAM
32/64 EPROM
EPM7160SLC84 (ZX ULA + Glue logic) giving video output etc
AY-3-8910 sound
8255 CF card reader
I can't understand why they just didn't do something like this rather than the ZX VEGA ??
So it should be possible to pop the 144 macrocells of the ZX Spectrum onto an EPM7160SLC84 ? Allowing a very basic ZX spectrum to be built :
Z80 (CPU)
128K SRAM
32/64 EPROM
EPM7160SLC84 (ZX ULA + Glue logic) giving video output etc
AY-3-8910 sound
8255 CF card reader
I can't understand why they just didn't do something like this rather than the ZX VEGA ??