Changes

Gate Array

499 bytes added, 30 March
/* See also */
-Address- 0 1 2 3 4 5 6 7
0000-3FFF RAM_0 RAM_0 '''RAM_4 ''' RAM_0 RAM_0 RAM_0 RAM_0 RAM_0 4000-7FFF RAM_1 RAM_1 '''RAM_5 ''' '''RAM_3 ''' '''RAM_4 ''' '''RAM_5 ''' '''RAM_6 ''' '''RAM_7''' 8000-BFFF RAM_2 RAM_2 '''RAM_6 ''' RAM_2 RAM_2 RAM_2 RAM_2 RAM_2 C000-FFFF RAM_3 '''RAM_7 ''' '''RAM_7 ''' '''RAM_7 ''' RAM_3 RAM_3 RAM_3 RAM_3
The Video RAM is always located in the first 64K, VRAM is in no way affected by this register.
*[[Synchronising with the CRTC and display]] : technical details on the relationship between Gate Array and CRTC.
 
*[[Media:40010-simplified V03.pdf]] [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/gate-array-decapped!/msg170713/#msg170713 Forum thread] Gate Array schematics - reverse engineered by Gerald
 
== External links ==
* [https://www.grimware.org/doku.php/documentations/devices/gatearray Gate Array documentation from Grimware]
* [http://quasar.cpcscene.net/doku.php?id=assem:gate_array Quasar Gate Array documentation (in french)]
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