Differences

This shows you the differences between two versions of the page.

Link to this comparison view

builderpages:plasmo:z80sbcrc [2018/12/05 09:05]
plasmo created
builderpages:plasmo:z80sbcrc [2018/12/05 09:08] (current)
plasmo
Line 3: Line 3:
 ===== Introduction ===== ===== Introduction =====
  
-This project started off as a quicky prototype to check out whether the lot of Z80 I purchased off eBay really can run at 20MHz (yes, they can).  Because it is simple and fast, it is ideal as a single board computer in the small RC2014 form factor. ​ Here are features of Z80SBCRC:+This project started off as a quicky prototype to check out whether the lot of Z80 I purchased off eBay really can run at 20MHz (yes, they can). Because it is simple and fast, it is ideal as a single board computer in the small RC2014 form factor. 
 + 
 +===== Features =====
  
   * Z80 running at 20MHz   * Z80 running at 20MHz
Line 16: Line 18:
   * RC2014 bus interface   * RC2014 bus interface
  
-The heart of the SBC is a 5V CPLD, Altera EPM7128S, that implements the serial port, generates baud clock, interfaces to compact flash, and divides memory into 32 banks. ​ The design has no ROM.  The traditional ROM software are stored in battery-backed RAM.  The serial bootstrap function loads the ROM-equivalent software into RAM when the board is powered up the first time; the system boots off the software in RAM for subsequent power cycles or resets. ​ The ROM-equivalent software are protected by switching to banks inaccessible to normal software.+===== Functions ===== 
 + 
 +The heart of the SBC is a 5V CPLD, Altera EPM7128S, that implements the serial port, generates baud clock, interfaces to compact flash, and divides memory into 32 banks. The design has no ROM. The traditional ROM software are stored in battery-backed RAM. The serial bootstrap function loads the ROM-equivalent software into RAM when the board is powered up the first time; the system boots off the software in RAM for subsequent power cycles or resets. The ROM-equivalent software are protected by switching to banks inaccessible to normal software.
  
  
builderpages/plasmo/z80sbcrc.1544018738.txt.gz · Last modified: 2018/12/05 09:05 by plasmo
Driven by DokuWiki Recent changes RSS feed Valid CSS Valid XHTML 1.0