faster than anybody thought, especially myself, the next version of zxsp is released. This version fixes some bugs discovered in the SPECTRA emulation and re-enables the possibility to run more than one machine instance at the same time.
The SPECTRA emulation had some bugs in border colours and in .z80 file reading. Also it triggered a sleeping error in the Z80 emulation, where under certain circumstances, e.g. when the SPECTRA interface was attached B-), wait cycles were inserted anytime the CPU was reading from contended memory. According to the location of this bug this should also have occurred when the memory access inspector was open.
Multiple instances: You now can open as many machine instances as you like ... and your Mac can execute. There are probably still some bugs left in here, but i have discovered nothing severe.
... Kio !
p.s.: summer has arrived here. B-)
p.p.s.: i have included a test rom which demonstrates the colour capabilities of the SPECTRA interface. On Paul Farrow's site there is probably a newer version. Just in case.