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Message
From: cvs at opencores.org<cvs@o...>
Date: Wed Mar 28 23:22:08 CEST 2007
Subject: [cvs-checkins] MODIFIED: openfire2 ...
Date: 00/07/03 28:23:22 Added: openfire2/docs memory-map.txt
Log:
Revision Changes Path
1.1 openfire2/docs/memory-map.txt
http://www.opencores.org/cvsweb.shtml/openfire2/docs/memory-map.txt?rev=1.1&content-type=text/x-cvsweb-markup
Index: memory-map.txt
===================================================================
Hint:
Address from the code side (if you want to know physical address >> 2)
Bit ordering: 0=MSB --> 31=LSB
I/O PORTS
-------------------------------------------------------------------------------------
ADDRESS READ WRITE
-------------------------------------------------------------------------------------
SP3SK GPIO: **ATTENTION** USE ALWAYS WORD (32BIT) WRITE DUE TO NOT BYTE SELECT LOGIC
0x0800_0000 31..24=segments_n 31..24=segments_n
0x0800_0001(r) 23..20=drivers_n 23..20=drivers_n
0x0800_0002(r) 19..16=pushbuttons
0x0800_0003(r) 15.. 8=leds 15..8 =leds
7.. 0=switches
UARTS STATUS REGISTER:
0x0800_0004 24=rx1_data_present
25=rx1_half_full
26=rx1_full
27=tx1_half_full
28=tx1_full
0x0800_0006 8=rx2_data_present
9=rx2_half_full
10=rx2_full
11=tx2_half_full
12=tx2_full
UART1_TXRX_DATA:
0x0800_0008 31..24=read byte 31..24=send byte
UART2_TXRX_DATA:
0x0800_000C 31..24=read byte 31..24=send byte
PROM_READER:
0x0800_0010 31..24=read current byte
0x0800_0011 23=requested sync 23=request next sync
22=requested data 22=request next byte
21=prom synced
20=data ready
TIMER1:
0x0800_0014 31=running/stopped 31=start/stop
30..0=current value 30..0=max. timer value
INTERRUPT_ENABLE:
0x0800_0018 31=enable timer1 interrupt
30=enable uart1 receive byte interrupt
29=enable uart2 receive byte interrupt
-------------------------------------------------
MEMORY MAP
-------------------------------------------------
0x0000_0000 block ram start (inside fpga)
0x0000_1fff block ram end
0x0000_0000 reset vector
0x0000_0008 software exception vector (break)
0x0000_0010 interrupt vector
0x0000_0018 reserved (breakpoint vector)
0x0000_0020 hardware exception vector
0x0400_0000 external sram start
0x040f_ffff external sram end
0x040e_2000 video ram start (inside external sram)
0x040f_ffff video ram end (size = 0x1_e000)
0x0800_0000 i/o space
0x0800_xxxx
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