T48 µController
P2 Port value restored after expander access #15
Closed arniml opened this issue about 19 years ago
arniml commented about 19 years ago
Affected releases: 0.1 BETA, 0.2 BETA, 0.3 BETA, 0.4 BETA, 0.5 BETA, 0.6 BETA
After access to expander interface (ANLD Pp; MOVD A,Pp; MOVD Pp,A; ORLD Pp) the port value of P2 is restored. This is wrong according to chapter "Port 2 Operations" of the "Expanded MCS-48 System" manual. It states that previously latched I/O information will be removed and not restored.
Fixed in: p2.vhd 1.8 Fix will be included in next release.
arniml was assigned about 19 years ago
arniml closed this about 19 years ago
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