Message

Reply | Reply all

Date Prev | Date Next | Thread Prev | Thread Next Date Index | Thread Index

From: cvs at opencores.org<cvs@o...>
Date: Sat May 24 17:19:59 CEST 2008
Subject: [cvs-checkins] MODIFIED: z80soc ...
Date: 00/08/05 24:17:19

Modified: z80soc/doc README-DE1.txt
Log:
Version 0.6


Revision Changes Path
1.2 z80soc/doc/README-DE1.txt

http://www.opencores.org/cvsweb.shtml/z80soc/doc/README-DE1.txt.diff?r1=1.1&r2=1.2

(In the diff below, changes in quantity of whitespace are not shown.)

Index: README-DE1.txt
===================================================================
RCS file: /cvsroot/rrred/z80soc/doc/README-DE1.txt,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -b -r1.1 -r1.2
--- README-DE1.txt 11 May 2008 12:13:05 -0000 1.1
+++ README-DE1.txt 24 May 2008 15:19:58 -0000 1.2
@@ -3,7 +3,6 @@
Arquitecture
------------

-
SW9 - Reserved - Reset
SW8 - Reserved
LEDR9 - Reserved
@@ -11,41 +10,32 @@

Memory
------
-0000H - 01FFH - ROM (0 - 8191)
-2000H - 3FFFH - VIDEO RAM (8192 - 16383)
-4000H - FFFFH - RAM (16384 - 65535)
-
-IO
---
-
-Output Ports
-------------
-01H - Green Leds (7-0)
-02H - Red Leds (7-0)
-
-10H - HEX1 - HEX0
-11H - HEX3 - HEX2
-
-
-
-Inputs
-------
-20H - SW(7-0)
-
-30H - KEY(3-0)
-
-Video
------
-2000h - 1FFFH Video RAM Memory
-2000h - 24B0H Text Video memory
-
-Keyboard
---------
-80H - Read Keyboard Ascii code
-
-Input/Output
-------------
+0000H - 3FFFH - ROM (0 - 16383)
+4000H - 5FFFH - VIDEO RAM (16384 - 24575)
+8000H - FFFFH - RAM memory (32768 - 65535)
+
+Registers
+---------
+7FDDH - Z80SOC VERSION (0 = DE1, 1 = S3E)
+7FDEH - 7FDFH - STACK ADDRESS (should be loaded with "ld sp,(7FDEh)" in the beginning of program
+
+IO (Ports)
+----------
+
+01H - Out - Green Leds (7-0)
+02H - Out - Red Leds (7-0)
+
+10H - Out - HEX1 - HEX0
+11H - Out - HEX3 - HEX2
+20H - In - SW(7-0)
+30H - In - KEY(3-0)
+80H - In - PS/2 keyboard
+90H - Out - Video
+91H - InOut - Video cursor X
+92H - InOut - Video cursor Y

+GPIO Expansion pins
+-------------------
All write operations to GPIO are buffered.
To write the buffered signals to the pins, the Z80 must
write any value to port C0 (GPIO0) or C1 (GPIO1)
@@ -80,7 +70,7 @@
Input push buttons
Input Switches
PS/2 keyboard
- Video text out
+ Video text out (memory mapped and port mapped io) Leds 7seg display @@ -98,12 +88,14 @@ takes effect after a Z80 reset. To reset the Z80, use SW9. +The looping text inside the box demonstrates how to access the video ram. +To change speed of scrolling, use the switches (SW). + Hope you enjoy. TO-DO: ---- -- Expand the character sets (this versions have only uppercase letters and numbers) - 80x40 Video display - Serial communication - Monitor program to allow download of programs by serial communication