Differences

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--- documentations:hardware:mo5 [2014/03/19 21:27] – created pulkomandy
+++ documentations:hardware:mo5 [2018/04/08 15:39] (current) – [Expansion port] pulkomandy
@@ Line 12: / Line 12: @@
 ==== Boot screen ====
+{{ :documentations:hardware:thomson_mo5_ss_boot.gif?nolink |}}
 ===== External links =====
 ====== Specifications ======
 <columns>
 ==== Frequencies ====
+  * [[documentations:devices:6809|6809E CPU]] at 1MHz
+  * [[documentations:devices:gate.arrays#MO5|Gate Array]] at 16MHz
+  * 50Hz interrupt
 ==== Video ====
+  * 50Hz framerate
+  * 16 color palette
+  * 320x200 resolution with 8x1 attribute blocks
+  * 16KB of video RAM
+  * RGB with composite sync output
 ==== Audio ====
+  * 1-bit sound through PIA
+  * Audio track from tape
+  * Output on SCART connector and expansion port
 <newcolumn>
 ==== Memories ====
+  * 48K of RAM
+  * 16K of ROM
+    * 4K for the monitor
+    * 12K for the BASIC
 ==== Mass storage ====
   * Tape port
+  * Cartridge connector
 ==== Keyboard ====
   * 58 keys
@@ Line 31: / Line 49: @@
 ====== Connectors ======
-  * Lightpen
-  * Tape
-  * 17V input
-  * SCART Video output
-  * Expansion port
-  * Cartridge port
 ==== Lightpen ====
 ==== Tape ====
+{{:documentations:hardware:din5-pinout.gif?nolink|}}
+  * 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 ====
 ==== SCART video ====
 ==== Expansion port ====
+^ B2    ^ B1 ^
+| GND   | N.C. (+12v) |
+| CLRG  | GND         |
+| /A7Cx | SON         |
+| /Axxx | R/W         |
+| A11 | E |
+| A10 | D7 |
+| A9 | D6 |
+| A8 | D5 |
+| A7 | D4 |
+| A6 | D3 |
+| A5 | D2 |
+| A4 | D1 |
+| A3 | D0 |
+| A2 | /Reset |
+| A1 | /FIRQ |
+| A0 | VCO 16MHz in |
+| /Bxxx | /IRQ |
+| SYNLT | VIDEO |
+| +5V | N.C. (-5V) |
 ==== Cartridge port ====
+<columns>
+^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     |10|A4|
+|D2     |11|A3|
+|D1     |12|A2|
+|D0     |13|A1|
+|GND    |14|A1|
+|R/-W   |15|E |
+<newcolumn>
+  * PRCART is pulled low by the cartridge to hide the BASIC ROM
+  * NCSCART is the "chip select" line for the cartridge space. It is active low, for all access to the B000-EFFF memory range.
+  * On first revision MO5, the A14, A15, and E signals are missing, making it impossible to use the RAM expansion.
+</columns>
+====== Keyboard ======
+===== Layout =====
+===== Mapping =====
+| ^0^1    ^2^3^4^5^6^7^
+^0|N|EFF  |J|H|U|Y|7|6|
+^1|,|INS  |K|G|I|T|8|5|
+^2|.|BACK |L|F|O|R|9|4|
+^3|@|RIGHT|M|D|P|E|0|3|
+^4| |DOWN |B|S|Z|/|-|2|
+^5|X|LEFT |V|Q|*|A|+|1|
+^6|W|UP|C|RAZ|ENT|CNT|ACC|STOP|
+^7|SHIFT|BASIC| ||||||
-====== Keyboard layout ======
 ====== Circuit diagram ======
 ====== Pictures ======
 ===== Original release =====
 ===== Revision 1 =====