diff --git a/README.md b/README.md new file mode 100644 index 0000000..df3d1cb --- /dev/null +++ b/README.md @@ -0,0 +1,15 @@ +Cheap compact ZX Spectrum CPLD-based clone. + +Specifications: +- CPLD EPM7128SLC84 (128 macrocells) +- Z80 3.5 (3.5795) MHz +- 128K RAM +- AY-8910 (YM2149) mono sound +- Pentagon timings +- PAL encoder in CPLD +- Intended to build on 9x15 prototyping board, but may be built on manufactured PCB + +To modify and compile CPLD firmware you need Quartus 9.0 SP2. +To modify schematic and pcb you need Kicad 5.1.4 or newer. + +[Some photos](https://cloud.err200.net/index.php/s/73TR85tYZkMm8Ax?path=%2Fsizif-128) diff --git a/README.txt b/README.txt deleted file mode 100644 index b55c649..0000000 --- a/README.txt +++ /dev/null @@ -1,11 +0,0 @@ -Compact ZX Spectrum CPLD-based clone. - -Specifications: -- 128K -- AY-8910 (YM2149) mono sound -- Pentagon timings -- PAL encoder in CPLD -- Intended to assemble on prototyping board, but may be assembled on manufactured PCB - -To modify and compile CPLD firmware you need Quartus 9.0 SP2. -To modify schematic and pcb you need Kicad 5.1.4 or newer.