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Herbymon (herby monitor?) MSX machine language monitor
Score: 176.31 %,
Type: Forum topic , Comments: 4 comments
In the late '80s I started learning machine learning with this book: Machinetaal voor MSX computers that I bought at the V&D :D
On the MSX I never used an assembler, but always used the monitor that was included in the book: Herbymon. ...
MSX Z80 clock frequency
Score: 175.11 %,
Type: Forum topic , Comments: 12 comments
I always thought that the Z80 was clocked at 3.58 MHz. But when I checked the clock frequency of my NMS8245, I noticed it was 3.55 MHz. I attributed that to the fact it is over 30 years old, but today I checked the service manual and noticed it is still spot on:
This is approx 0.7% slower. ...
Exact timing of IN A,() and IN A,(C)
Score: 174.98 %,
Type: Forum topic , Comments: 3 comments
Dear MSX fans,
I am trying to read data via the joystick port at a high sample rate.
The IN instructions on the MSX take 12 (IN A,(n)) or 14 cycles (IN r,(C)).
I am trying to figure out at what cycle the actual data is read from the bus. ...
RS232 at 57600 bps via joystick port
Score: 178.53 %,
Type: Forum topic , Comments: 15 comments
The last months I have been trying to get a stable serial connection between a FT232 module and my MSX (NMS8245).
I believe it is working now. It is still a very basic driver: just sending and receiving bytes at 57600 bps. Pin1 is RX (input) and pin6 ...
