Difference between revisions of "Z80-SIO dual ports RS232 interface for CPC (French)"
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(Created page with ''''Z80-SIO dual ports RS232 interface for CPC.''' This is 8 scans of article from French magazine including description, schematic and PCB project. [[http://www.cpcwiki.eu/imgs/…') |
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| − | '''Z80-SIO dual ports RS232 interface for CPC.''' | + | '''Philippe Lebel's Z80-SIO dual ports RS232 interface for CPC.''' |
| − | + | ||
| − | [[ | + | Scans of article from French magazine including description, schematic and PCB project. |
| + | |||
| + | == Technical == | ||
| + | |||
| + | FC5Ch Latch 74LS273 (IC8) for COM8116 (IC9) | ||
| + | Bit7-4 Channel A RX/TX Clock | ||
| + | Bit3-0 Channel B RX/TX Clock | ||
| + | FC7Ch [[Z80-DART/Z80-SIO chip|Z80 SIO]] Channel A Data | ||
| + | FC7Dh [[Z80-DART/Z80-SIO chip|Z80 SIO]] Channel A Control/Status | ||
| + | FC7Eh [[Z80-DART/Z80-SIO chip|Z80 SIO]] Channel B Data | ||
| + | FC7Fh [[Z80-DART/Z80-SIO chip|Z80 SIO]] Channel B Control/Status | ||
| + | |||
| + | For details on the Z80 SIO, see [[Z80-DART/Z80-SIO chip]]. The circuit supports both Channel A and B. However, for channel B, only RX/TX signals are implemented (though with some modification, one could add a third MAX232 for also supporting RTS/CTS and DTR/DSR). | ||
| + | |||
| + | The COM8116 chip is driven by a 4.9152 MHz crystal. Selectable clock sources are: | ||
| + | 0=800 Hz 4=2400 Hz 8=28800 Hz 12=76800 Hz | ||
| + | 1=1200 Hz 5=4800 Hz 9=32000 Hz 13=115200 Hz | ||
| + | 2=1760 Hz 6=9600 Hz 10=38400 Hz 14=153600 Hz | ||
| + | 3=2152 Hz 7=19200 Hz 11=57600 Hz 15=307200 Hz | ||
| + | The baudrates can be further divided by 1,16,32,64 inside of the Z80 SIO. | ||
| + | |||
| + | <gallery> | ||
| + | File:French DIY Dual Port RS232 schematic.jpg|Schematic | ||
| + | </gallery> | ||
| + | |||
| + | == Scanned Article == | ||
| + | |||
| + | [[Media:Rs232fr.zip]] - Scanned DIY article (8 pages). | ||
| + | |||
| + | [[Category:Peripherals]] | ||
Latest revision as of 06:34, 26 August 2014
Philippe Lebel's Z80-SIO dual ports RS232 interface for CPC.
Scans of article from French magazine including description, schematic and PCB project.
Technical
FC5Ch Latch 74LS273 (IC8) for COM8116 (IC9)
Bit7-4 Channel A RX/TX Clock
Bit3-0 Channel B RX/TX Clock
FC7Ch Z80 SIO Channel A Data
FC7Dh Z80 SIO Channel A Control/Status
FC7Eh Z80 SIO Channel B Data
FC7Fh Z80 SIO Channel B Control/Status
For details on the Z80 SIO, see Z80-DART/Z80-SIO chip. The circuit supports both Channel A and B. However, for channel B, only RX/TX signals are implemented (though with some modification, one could add a third MAX232 for also supporting RTS/CTS and DTR/DSR).
The COM8116 chip is driven by a 4.9152 MHz crystal. Selectable clock sources are:
0=800 Hz 4=2400 Hz 8=28800 Hz 12=76800 Hz 1=1200 Hz 5=4800 Hz 9=32000 Hz 13=115200 Hz 2=1760 Hz 6=9600 Hz 10=38400 Hz 14=153600 Hz 3=2152 Hz 7=19200 Hz 11=57600 Hz 15=307200 Hz
The baudrates can be further divided by 1,16,32,64 inside of the Z80 SIO.
Schematic
Scanned Article
Media:Rs232fr.zip - Scanned DIY article (8 pages).
