Thomas Harte acfd4dde36 Reduced port writes which can adjust programmatic sync, and prevented anything while NMI generation is active. Moved line counter increment from triggered by interrupt acknowledge to triggered by horizontal sync. In both cases, cribbing from my own earlier work. Initial results suggest that sync issues are resolved in third-party software.

2017-06-22 22:44:06 -04:00

..

Video.cpp

Discovered my timing error: the I/R <-> A loads should take an extra cycle. This means the ZX80 now finally takes the correct 207 cycles per line. Fixed the video output wave to be clocked at the appropriate rate.

2017-06-12 18:55:04 -04:00

Video.hpp

Added comments.

2017-06-06 18:01:33 -04:00

ZX8081.cpp

Reduced port writes which can adjust programmatic sync, and prevented anything while NMI generation is active. Moved line counter increment from triggered by interrupt acknowledge to triggered by horizontal sync. In both cases, cribbing from my own earlier work. Initial results suggest that sync issues are resolved in third-party software.

2017-06-22 22:44:06 -04:00

ZX8081.hpp

Connected up the fast-tape GUI option for the ZX80 and '81.

2017-06-22 20:20:31 -04:00