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-rw-r--r--board/gen860t/README25
1 files changed, 15 insertions, 10 deletions
diff --git a/board/gen860t/README b/board/gen860t/README
index 761ceed..7c03f93 100644
--- a/board/gen860t/README
+++ b/board/gen860t/README
@@ -1,8 +1,7 @@
-
This directory contains board specific code for a generic MPC860T based
embedded computer, called 'GEN860T'. The design is generic in the sense that
common, readily available components are used and that the architecture of the
-system is i(relatively) straightforward:
+system is relatively straightforward:
One eight bit wide boot (FLASH) memory
32 bit main memory using SDRAM
@@ -23,14 +22,14 @@ hearing from you, especially if you discover bugs or find ways to improve the
quality of this U-Boot port.
Here are the salient features of the system:
-Clock : 33 Mhz oscillator
-Processor core frequency : 66 Mhz if in 1:2:1 mode; can also run 1:1
-Bus frequency : 33 Mhz
+Clock : 33.3 Mhz oscillator
+Processor core frequency : 66.6 Mhz if in 1:2:1 mode; can also run 1:1
+Bus frequency : 33.3 Mhz
Main memory:
Type : SDRAM
Width : 32 bits
- Size : 64 megabytes
+ Size : 64 mibibytes
Chip : Two Micron MT48LC16M16A2TG-7E
CS : MPC860T CS1*/UPMA
UPMA CONNECTIONS:
@@ -42,7 +41,7 @@ Main memory:
Boot memory:
Type : FLASH
Width : 8 bits
- Size : 16 megabytes
+ Size : 16 mibibytes
Chip : One Intel 28F128J3A (StrataFlash)
CS : MPC860T CS0*/GPCM (this is the "boot" chip select)
@@ -56,7 +55,7 @@ EEPROM memory:
Filesystem memory:
Type : NAND FLASH (Toshiba)
Width : 8 bits (i.e. interface to DOC is 8 bits)
- Size : 32 megabytes
+ Size : 32 mibibytes
Chip : One DiskOnCHip Millenium Plus (DOC 2000+)
CS : MPC860T CS2*/GPCM
@@ -92,6 +91,12 @@ Miscellaneous:
Mil-Std 1553 databus interface on CS5*/GPCM.
Audio sounder (beeper) with digital volume control connected to SPKROUT.
+SC variant:
+ A reduced-feature version of the GEN860T port is also supported: GEN860T_SC.
+ The 'SC' variant only provides support for the Virtex FPGA, SDRAM main
+ memory, EEPROM and flash memory. The system clock frequency is reduced
+ to 24 MHz.
+
Issues:
The DOC 2000+ returns 0x40 as its device ID when probed using the method
desxribed in the DOC datasheet. Unfortunately, the U-Boot DOC driver
@@ -105,11 +110,11 @@ Status:
in MTD for this device. I wish I had known this sooner :(
The GEN860T board specific files and configuration is based on the work
-of others who have contributed to U-Boot. The copright and license notices
+of others who have contributed to U-Boot. The copyright and license notices
of these authors have been retained wherever their code has been reused.
All new code to support the GEN860T board is:
- (C) Copyright 2001-2002
+ (C) Copyright 2001-2003
Keith Outwater (keith_outwater@mvis.com)
and the following license applies: