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--- x68000:pio-6834-2_4m_-_memory_expansion_board [2012/02/05 09:09] – eidis
+++ x68000:pio-6834-2_4m_-_memory_expansion_board [2019/08/27 20:45] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-===== PIO-6834-2/4M - Memory expansion board =====
+===== PIO-6834-2/4M-1 - Memory expansion board =====
-|{{:x68000:pio-6834_1.jpg?200|}}  |{{:x68000:pio-6834_2.jpg?200|}}  |
+PIO-6834-2/4M-1 is a 2MB or 4MB I/O slot memory expansion board manufactured and sold from 1990 by I.O Data for X68000 which have or have been expanded to 2MB.
-|  PIO-6834-2/4M (2MB)  |  PIO-6834-2/4M jumper settings  |
-|{{:x68000:pio-6834_3.jpg?200|}}  |{{:x68000:pio-6834_4.jpg?200|}}  |
+|{{:x68000:pio-6834_1a.jpg?250|}}  |{{:x68000:pio-6834_3.jpg?250|}}  |
-|  PIO-6834-2/4M (4MB)  |  PIO-6834-2/4M jumper settings  |
+|  PIO-6834-2/4M-1 (2MB)  |  PIO-6834-2/4M-1 (4MB)  |
+{{:x68000:pio-6834_2.jpg?300 |}}
+The main memory needs to be configured as one continuous block and you can configure the board to start addressing main memory from the following locations:
+|  MB  |  1  |  2  |  3  |  4  |
+|  2M  |  OFF  |  OFF  |  OFF  |  OFF  |
+|  4M  |  ON  |  OFF  |  OFF  |  OFF  |
+|  6M  |  OFF  |  ON  |  OFF  |  OFF  |
+|  8M  |  OFF  |  OFF  |  ON  |  OFF  |
+|  10M  |  OFF  |  OFF  |  OFF  |  ON  |
+The default settings are 2MB