Differences

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--- documentations:hardware:mo5 [2014/03/23 14:26] – [Boot screen] pulkomandy
+++ documentations:hardware:mo5 [2018/04/08 15:39] (current) – [Expansion port] pulkomandy
@@ Line 15: / Line 15: @@
 ===== External links =====
 ====== Specifications ======
 <columns>
 ==== Frequencies ====
   * [[documentations:devices:6809|6809E CPU]] at 1MHz
-  * [[documentations:devices:gate.array|Gate Array]] at 16MHz
+  * [[documentations:devices:gate.arrays#MO5|Gate Array]] at 16MHz
   * 50Hz interrupt
 ==== Video ====
@@ Line 48: / Line 49: @@
 ====== Connectors ======
-  * Lightpen
-  * Tape
-  * 17V input
-  * SCART Video output
-  * Expansion port
-  * Cartridge port
 ==== Lightpen ====
@@ Line 72: / Line 67: @@
 ==== SCART video ====
 ==== Expansion port ====
-==== Cartridge 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 =====