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documentations:hardware:mo5 [2014/03/23 13:39] – [Keyboard layout] pulkomandy | documentations:hardware:mo5 [2015/03/01 17:26] – pulkomandy | ||
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==== Boot screen ==== | ==== Boot screen ==== | ||
+ | {{ : | ||
===== External links ===== | ===== External links ===== | ||
====== Specifications ====== | ====== Specifications ====== | ||
+ | |||
< | < | ||
==== Frequencies ==== | ==== Frequencies ==== | ||
* [[documentations: | * [[documentations: | ||
- | * [[documentations: | + | * [[documentations: |
* 50Hz interrupt | * 50Hz interrupt | ||
==== Video ==== | ==== Video ==== | ||
Line 47: | Line 49: | ||
====== Connectors ====== | ====== Connectors ====== | ||
- | * Lightpen | ||
- | * Tape | ||
- | * 17V input | ||
- | * SCART Video output | ||
- | * Expansion port | ||
- | * Cartridge port | ||
==== Lightpen ==== | ==== Lightpen ==== | ||
==== Tape ==== | ==== Tape ==== | ||
+ | |||
+ | {{: | ||
+ | |||
+ | * Pin 1: Motor control (set to 0 to spin motor) | ||
+ | * Pin 2: ground | ||
+ | * Pin 3: audio input | ||
+ | * Pin 4: data input | ||
+ | * Pin 5: data output | ||
+ | |||
+ | All pins except the audio input are TTL levels, straight from the 6821 PIA. The tape port can be used as a generic bit-banged serial port for other applications. The tape drive does all the filtering and cleanup of the tape data itself, and transmitsthe binary level that the computer needs for decoding. | ||
+ | |||
+ | The audio input comes from the second track of the tape drive, which has a stereo head. It is mixed with the 1bit sound from the machine and sent to the audio pins of the SCART connector. | ||
==== 17V input ==== | ==== 17V input ==== | ||
==== SCART video ==== | ==== SCART video ==== | ||
==== Expansion port ==== | ==== Expansion port ==== | ||
==== Cartridge port ==== | ==== Cartridge port ==== | ||
+ | < | ||
+ | ^A (Front)^Pin number^B (Back)^ | ||
+ | |A14 |1 |A15| | ||
+ | |+5V |2 |A12| | ||
+ | |PRCART |3 |A11| | ||
+ | |A13 |4 |A10| | ||
+ | |NCSCART|5 |A9| | ||
+ | |D7 |6 |A8| | ||
+ | |D6 |7 |A7| | ||
+ | |D5 |8 |A6| | ||
+ | |D4 |9 |A5| | ||
+ | |D3 | ||
+ | |D2 | ||
+ | |D1 | ||
+ | |D0 | ||
+ | |GND |14|A1| | ||
+ | |R/-W |15|E | | ||
+ | < | ||
+ | * PRCART is pulled low by the cartridge to hide the BASIC ROM | ||
+ | * NCSCART is the "chip select" | ||
+ | * On first revision MO5, the A14, A15, and E signals are missing, making it impossible to use the RAM expansion. | ||
+ | </ | ||
====== Keyboard ====== | ====== Keyboard ====== | ||
===== Layout ===== | ===== Layout ===== |