Difference between revisions of "Schneider RS232 Interface"
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| − | RS232 Interface for the CPC by [[Schneider]]. Schneider is the german distributor for Amstrad CPC hardware (however, this | + | RS232 Interface for the CPC by [[Schneider]]. Schneider is the german distributor for Amstrad CPC hardware (however, this interface seems to be Schneider's own invention, not an Amstrad product). |
| − | interface seems to be Schneider's own invention, not an Amstrad product). | + | |
| − | + | The original [[Schneider RS232 Interface]] was released around 1985. Two years later, in 1987, a software-compatible clone was released as DIY schematic in a german book ([[Maschinenspracheprogramme und Hardware-Erweiterungen für Schneider CPC's|link]]). Even later, around 1996, a copy of that DIY schematic also circulated in the internet ([[Tim Riemann's RS232 interface|link]]). The DIY port address, timings and handshake signals are exactly the same as in the original Schneider version - except that DCD (Data Carrier Detect) isn't implemented in the DIY version. | |
== Pictures == | == Pictures == | ||
| Line 21: | Line 20: | ||
Default I/O addresses are F8E0h-F8EFh (though the interface can be jumpered to use different addresses). | Default I/O addresses are F8E0h-F8EFh (though the interface can be jumpered to use different addresses). | ||
| − | F8E0h - Indirect Data Register | + | F8E0h - [[Z80-STI]] Indirect Data Register |
| − | F8E1h - General Purpose I/O Data Register | + | F8E1h - [[Z80-STI]] General Purpose I/O Data Register |
| − | F8E2h - Interrupt Pending Register B ;\ | + | F8E2h - [[Z80-STI]] Interrupt Pending Register B ;\ |
| − | F8E3h - Interrupt Pending Register A ; | + | F8E3h - [[Z80-STI]] Interrupt Pending Register A ; |
| − | F8E4h - Interrupt in-Service Register B ; not used | + | F8E4h - [[Z80-STI]] Interrupt in-Service Register B ; not used |
| − | F8E5h - Interrupt in-Service Register A ; | + | F8E5h - [[Z80-STI]] Interrupt in-Service Register A ; |
| − | F8E6h - Interrupt Mask Register B ; | + | F8E6h - [[Z80-STI]] Interrupt Mask Register B ; |
| − | F8E7h - Interrupt Mask Register A ;/ | + | F8E7h - [[Z80-STI]] Interrupt Mask Register A ;/ |
| − | F8E8h - Indirect Index and Interrupt Vector Register | + | F8E8h - [[Z80-STI]] Indirect Index and Interrupt Vector Register |
| − | F8E9h - Timers A and B Control Register ;\ | + | F8E9h - [[Z80-STI]] Timers A and B Control Register ;\ |
| − | F8EAh - Timer B Data Register ; not used | + | F8EAh - [[Z80-STI]] Timer B Data Register ; not used |
| − | F8EBh - Timer A Data Register ;/ | + | F8EBh - [[Z80-STI]] Timer A Data Register ;/ |
| − | F8ECh - USART Control Register | + | F8ECh - [[Z80-STI]] USART Control Register |
| − | F8EDh - Receiver Status Register | + | F8EDh - [[Z80-STI]] Receiver Status Register |
| − | F8EEh - Transmitter Status Register | + | F8EEh - [[Z80-STI]] Transmitter Status Register |
| − | F8EFh - USART Data Register | + | F8EFh - [[Z80-STI]] USART Data Register |
Aside from the above 16 directly addressable registers, there are 8 indirectly addressable ones. For details on the direct & indirect registers, see [[Z80-STI]]. | Aside from the above 16 directly addressable registers, there are 8 indirectly addressable ones. For details on the direct & indirect registers, see [[Z80-STI]]. | ||
== Software == | == Software == | ||
| − | |||
| − | + | * Supported by "Starwriter". | |
| − | + | * BASIC example (for the official version) is found in the Schneider RS232 manual (see below scans) | |
| − | + | * ASM example (for the DIY version) is included with [[Tim Riemann's RS232 interface]] | |
== Manual (german) == | == Manual (german) == | ||
| Line 55: | Line 53: | ||
File:SchneiderSioManualPage4.jpg|Page 4 (blank / footer) | File:SchneiderSioManualPage4.jpg|Page 4 (blank / footer) | ||
</gallery> | </gallery> | ||
| + | |||
| + | == Note == | ||
| + | |||
| + | The uncommon shape of the housing dates back to a Schneider BTX modul (which was being intended to be plugged into Schneider Television Sets). Apparently Schneider produced too many housings, and re-used them for the RS232 interface. Actually, a RS232 interface is very much the same as a BTX interface (the actual BTX modem must be rented separately from Deutsche Bundespost), so even the PCB may be (almost/exactly?) the same for both devices. | ||
== Datasheet == | == Datasheet == | ||
* A [[Media:Mostek_3801_Data.pdf|"Z80 STI"]] is a 40pin [[Media:Mostek_3801_Data.pdf|MK3801]] chip from Mostek. Details on that chip are from the "MOSTEK 1982/1983 Microelectronic Data Book" (kindly made available by John Robertson). | * A [[Media:Mostek_3801_Data.pdf|"Z80 STI"]] is a 40pin [[Media:Mostek_3801_Data.pdf|MK3801]] chip from Mostek. Details on that chip are from the "MOSTEK 1982/1983 Microelectronic Data Book" (kindly made available by John Robertson). | ||
| − | |||
| − | |||
[[Category:Hardware]] [[Category:Peripherals]] [[Category:Serial_interfaces]] | [[Category:Hardware]] [[Category:Peripherals]] [[Category:Serial_interfaces]] | ||
Revision as of 18:52, 11 May 2010
RS232 Interface for the CPC by Schneider. Schneider is the german distributor for Amstrad CPC hardware (however, this interface seems to be Schneider's own invention, not an Amstrad product).
The original Schneider RS232 Interface was released around 1985. Two years later, in 1987, a software-compatible clone was released as DIY schematic in a german book (link). Even later, around 1996, a copy of that DIY schematic also circulated in the internet (link). The DIY port address, timings and handshake signals are exactly the same as in the original Schneider version - except that DCD (Data Carrier Detect) isn't implemented in the DIY version.
Pictures
- The Schneider RS232 interface
Interface
Description
PCB top
PCB bottom
Front Plate
Label
Expansion Port Cable
Power Supply
I/O Ports
Default I/O addresses are F8E0h-F8EFh (though the interface can be jumpered to use different addresses).
F8E0h - Z80-STI Indirect Data Register F8E1h - Z80-STI General Purpose I/O Data Register F8E2h - Z80-STI Interrupt Pending Register B ;\ F8E3h - Z80-STI Interrupt Pending Register A ; F8E4h - Z80-STI Interrupt in-Service Register B ; not used F8E5h - Z80-STI Interrupt in-Service Register A ; F8E6h - Z80-STI Interrupt Mask Register B ; F8E7h - Z80-STI Interrupt Mask Register A ;/ F8E8h - Z80-STI Indirect Index and Interrupt Vector Register F8E9h - Z80-STI Timers A and B Control Register ;\ F8EAh - Z80-STI Timer B Data Register ; not used F8EBh - Z80-STI Timer A Data Register ;/ F8ECh - Z80-STI USART Control Register F8EDh - Z80-STI Receiver Status Register F8EEh - Z80-STI Transmitter Status Register F8EFh - Z80-STI USART Data Register
Aside from the above 16 directly addressable registers, there are 8 indirectly addressable ones. For details on the direct & indirect registers, see Z80-STI.
Software
- Supported by "Starwriter".
- BASIC example (for the official version) is found in the Schneider RS232 manual (see below scans)
- ASM example (for the DIY version) is included with Tim Riemann's RS232 interface
Manual (german)
Page 1 (cable / jumpers)
Page 2 (schematic)
Page 3 (z80-sti registers)
Page 4 (blank / footer)
Note
The uncommon shape of the housing dates back to a Schneider BTX modul (which was being intended to be plugged into Schneider Television Sets). Apparently Schneider produced too many housings, and re-used them for the RS232 interface. Actually, a RS232 interface is very much the same as a BTX interface (the actual BTX modem must be rented separately from Deutsche Bundespost), so even the PCB may be (almost/exactly?) the same for both devices.
