Editing PIC microcontrollers (section)

===Hycon===
{{Further|PIC instruction listings#Hycon clones (16 bit)}}
[[Hycon Technology]], a Taiwanese manufacturer of [[mixed-signal]] chips for portable electronics ([[multimeter]]s, [[kitchen scale]]s, etc.), has a proprietary H08 microcontroller series with a 16-bit instruction word very similar to the PIC18 family.  (No relation to the [[H8 Family|Hitachi/Renesas H8 microcontrollers]].)  The H08A<ref>{{cite web |url=https://www.hycontek.com/wp-content/uploads/APD-CORE002_EN.pdf |title=Instruction Set H08A User’s Manual |date=1 August 2010 |publisher=Hycon Technology Corp. |id=APD-CORE002-V03_EN |accessdate=2025-01-04}}</ref> is most like the PIC18; the H08B<ref>{{cite web |url=https://www.hycontek.com/hy_mcu/APD-CORE003_EN.pdf |title=Instruction Set H08B User’s Manual |date=1 August 2010 |publisher=Hycon Technology Corp. |id=APD-CORE003-V02_EN |accessdate=2016-08-19}}</ref> is a subset.<ref>{{cite web |url=https://www.hycontek.com/hy_mcu/APD-CORE001_EN.pdf#page=3 |title=CPU Core Application Description: Comparisons and Supplements of Instruction Set H08A and H08B |date=24 March 2011 |publisher=Hycon Technology Corp. |id=APD-CORE001_EN-V06}}</ref>
	
Although the available instructions are almost identical, their ''encoding'' is different, as is the memory map and peripherals.  For example, the PIC18 allows direct access to RAM at 0x000–0x07F or special function registers at 0xF80–0xFFF by sign-extending an 8-bit address.  The H08 places special function registers at 0x000–0x07F and global RAM at 0x080–0x0FF, zero-extending the address.