Changes

LK1,LK2,LK3 connect to [[8255|PPI]] Port B, Bit1-3. The links select the manufacturer name (which is displayed by the BIOS in the power-up message). These LKs exist on all CPC mainboards (in CPC Plus/GX4000 /Costdown schematics they are named LK101,LK102,LK103). By default, LK1-LK3 are not installed ([[Amstrad]]). Other combinations are LK2 installed in german [[Schneider]] models, and LK1+LK2 in australian [[Awa]] models. For more info see [[LK-selectable Brand Names]].

{|{{Prettytable|width: 700px; font== LK4 -size: 2em;}}|''Bit 3 (LK3)''||''Bit 2 (LK2)''||''Bit 1 (LK1)''||''Manufacturer Name'' |-|0||0||0||[[Isp]]|-|0||0||1||[[Triumph]]|-|0||1||0||[[Saisho]]|-|0||1||1||[[Solavox]]|-|1||0||0||[[Awa]] (australian CPCs)|-|1||0||1||[[Schneider]] (german CPCs)|-|1||1||0||[[Orion]]|-|1||1||1||[[Amstrad]] (default)|-|}Screen Refresh Rate ==

Note: "0" means LK installed. == LK4 (LK104 on Plus/GX4000/Costdown) connects to [[8255|PPI]] Port B, Bit4. The link tells the BIOS whether it should set- Screen Refresh Rate ==up the [[CRTC]] for 50Hz or 60Hz refresh rate.