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Hardware / Re: Enterprise MIDI hardware
« on: 2018.December.12. 23:36:01 »
What a good clue!
But, who is Jefrey?
But, who is Jefrey?
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Hardware / Re: Enterprise MIDI hardware
« on: 2018.December.12. 19:06:49 »
Both the Enterprise MIDI cartridge and the Philips NMS-1205 use the same chip, the Motorola MC68B50P.
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Hardware / Re: Enterprise MIDI hardware
« on: 2018.December.12. 12:34:14 »
You mean an external MIDI interface+ROM?
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Hardware / Re: Enterprise MIDI hardware
« on: 2018.December.12. 11:55:35 »
There is an old thread about the Scoretrack program.
I would love to have one of these MIDI interfaces, but the cartridge bay is better populated with a good SD-reader. Maybe it would be more realistic to build an external board, for example cloning the Philips NMS-1205 MSX cartridge MIDI side. This is the actual link to the Service Manual
Once the interface working, any of our resident genius coders can take the Scoretrack incomplete Rom and make it work.
Edit: I have somehow made the NMS-1205 cartridge work on the Enterprise with the M-Slot adapter.
I would love to have one of these MIDI interfaces, but the cartridge bay is better populated with a good SD-reader. Maybe it would be more realistic to build an external board, for example cloning the Philips NMS-1205 MSX cartridge MIDI side. This is the actual link to the Service Manual
Once the interface working, any of our resident genius coders can take the Scoretrack incomplete Rom and make it work.
Edit: I have somehow made the NMS-1205 cartridge work on the Enterprise with the M-Slot adapter.
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.11. 09:06:33 »
Can you put here an example of the routine?
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.10. 18:30:50 »
Actually you copy the data to the Editor: channel directly. Better use an intermediate variable in a loop, for example:
GET £1:a$
This will take only a character every time. Then you can add the character in a$ to other variable, for example b$, and print the sentence to the default channel £0 if you find a ^M, Enter, chr$(13) or other convenient character.
You can also use READ instead of GET, but you will need an error handler routine. You can read examples on the Basic manual.
To add variable strings you must use b$=b$&a$, & instead of +, used to add numbers.
GET £1:a$
This will take only a character every time. Then you can add the character in a$ to other variable, for example b$, and print the sentence to the default channel £0 if you find a ^M, Enter, chr$(13) or other convenient character.
You can also use READ instead of GET, but you will need an error handler routine. You can read examples on the Basic manual.
To add variable strings you must use b$=b$&a$, & instead of +, used to add numbers.
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.09. 23:42:45 »
No, I mean using the serial device on machine code, avoiding Basic. I don't know why but think it interferes with the reading of the serial bits 4 and 5 on port B6.
In Basic, Zozo advised me to use READ £X + an error handler, instead of GET £X, but I haven't been able to make it work.
In Basic, Zozo advised me to use READ £X + an error handler, instead of GET £X, but I haven't been able to make it work.
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.09. 15:47:34 »
The handshaking doesn't work properly on Basic, but it can work on machine code. Yes, we have used the 74LS06 due to being used inside the Enterprise.
The Wifi chip doesn't need handshaking, only when the user sends Enter the chip returns his text. The Enterprise buffer is not big, but I don't remember only 24 bytes. To avoid the end of buffer better read immediately from the channel every incomming character.
We have opted to not use the offset, due to the isolation needed,. For a real Serial port you also don't need to use it, as the levels are 0 and +12v.
The Wifi chip doesn't need handshaking, only when the user sends Enter the chip returns his text. The Enterprise buffer is not big, but I don't remember only 24 bytes. To avoid the end of buffer better read immediately from the channel every incomming character.
We have opted to not use the offset, due to the isolation needed,. For a real Serial port you also don't need to use it, as the levels are 0 and +12v.
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CPC-ről / Re: Profanation
« on: 2018.December.07. 18:38:55 »Ez a végleges verzió?
A spanyol weboldalon szeretném bejelenteni
--------------------------
Is this the final version?
I want to anounce it on the Spanish webs.
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.07. 11:37:04 »
Ah, now I remember, the circuit also allows the direct connexion of an ESP8266 ESP-12F, that also has a handshake serial mode.
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.07. 11:13:31 »
This is the first prototype.
But it has a number of errors:
-The EDGE connector is mirrored. A cable was used instead.
-The footprint for the CH340G has to be narrower, it hardly coincides with the chip's legs.
-The CH340G should be feed with +3,3v and the levels of RX and CTS be with pull-up to +3,3v instead of +5v.
What the circuit does is to standardise the Enterprise serial signals to TTL compatible or to USB serial.
The CH340G chip is used on some USB serial adapters, and fits the Enterprise because it manages the two data signals and also the two handshake signals.
The 74LS06 and some diodes and resistors are used to invert and adapt the Enterprise levels.
But it has a number of errors:
-The EDGE connector is mirrored. A cable was used instead.
-The footprint for the CH340G has to be narrower, it hardly coincides with the chip's legs.
-The CH340G should be feed with +3,3v and the levels of RX and CTS be with pull-up to +3,3v instead of +5v.
What the circuit does is to standardise the Enterprise serial signals to TTL compatible or to USB serial.
The CH340G chip is used on some USB serial adapters, and fits the Enterprise because it manages the two data signals and also the two handshake signals.
The 74LS06 and some diodes and resistors are used to invert and adapt the Enterprise levels.
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Hardware / Re: USB to Enterprise serial
« on: 2018.December.06. 23:29:38 »
One friend of mine has such circuit. It needs some minor fixings on the 3,3v conversion, but he has little time now as he is teacher on the University.
On the tests we made it worked perfectly on input or output access on Basic programs, but not on half-duplex due to an error on Basic.
I can't say you a date of release, but probably before next Summer....
On the tests we made it worked perfectly on input or output access on Basic programs, but not on half-duplex due to an error on Basic.
I can't say you a date of release, but probably before next Summer....