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documentations:hardware:to8 [2015/02/28 18:08] – external edit 127.0.0.1documentations:hardware:to8 [2015/03/01 17:31] (current) – [Memories] pulkomandy
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 ==== Frequencies ==== ==== Frequencies ====
   * 6809E CPU at 1MHz   * 6809E CPU at 1MHz
-  * 1 "page mode" gate array chips at 16MHz+  * 1 "page mode" gate array chip at 16MHz
 ==== Video ==== ==== Video ====
   * 50Hz or 60Hz frame rate   * 50Hz or 60Hz frame rate
Line 27: Line 27:
   * Output to audio pins of SCART port (mono)   * Output to audio pins of SCART port (mono)
 ==== Memories ==== ==== Memories ====
-  * 256KiB RAM +  * 256KiB RAM split into 16 pages of 16K each 
-    * 16KiB screen RAM +    * 16KiB screen RAM (CPU has a fixed mapping to page 0, but the video logic can use pages 0 to 3) 
-    * 16KiB "user" RAM (fixed) +    * 16KiB "user" RAM (fixed mapping to page 1
-    * 224KiB expansion RAM+    * All pages can be mapped to the "RAM page" area or the "cartridge space" area. 
 +  * RAM expansion port on the back of the machine to add 16 more pages of RAM.
   * 80KiB ROM   * 80KiB ROM
     * 16KiB system and disk ROM     * 16KiB system and disk ROM
     * 32KiB for BASIC 128 and EXTRAMON     * 32KiB for BASIC 128 and EXTRAMON
     * 32KiB for BASIC 1.0, boot screen, and icon DOS     * 32KiB for BASIC 1.0, boot screen, and icon DOS
 +
 <newcolumn> <newcolumn>
 ==== Mass storage ==== ==== Mass storage ====
documentations/hardware/to8.1425143305.txt.gz · Last modified: 2015/03/01 17:29 (external edit)
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