We decided to take a DIMM-PC®/520-IE with AMD® Elan™ SC520 (133MHz) CPU from Kontron.
Due to the internally-set multiplier of 4, the core runs at 133 MHz. The combination of the relatively large 16 KB write-back L1 cache and 133 MHz clock speed allows the 5×86 to perform >= an Intel Pentium 75 MHz processor in integer arithmetic performance.
The Elan CPU comes with following architecture.
And last but not least the full feature list of our DIMM-PC
|AMD® Elan™ SC520 133MHz
|16 kByte Write-Back L1
|JIDA Support, I²C Bus, Programmable / CS Output, Support for alphanumerical displays
|Dimensions (H x W x D)
|68 x 40 mm (2.7 x 1.6“)
|10/100 MBit Ethernet
|IDE compatible Flash Disk up to 32 MByte on board
|IDE Hard Disk Interface on external device
|Operation: 10% to 90%
Storage: 5% to 95%, (non condensing)
|Floppy Interface single drive
|JRC / JIDA32
|JRC remote control via COM
|Keyboard Controller integrated with chipset
|Up to 32 MByte DRAM on board
|Preinstalled DR-DOS®, lol 🙂
|1 x LPT1, EPP support
|2 Watt @ 5V only
|Real Time Clock
|Integrated with chipset
|2 x Serial TTL (16550 compatible)
|EEPROM for CMOS Setup
|Optional 1x USB 1.1 OHCI
Our aim was to build an education system to show our students how PC systems are working and how easy it is to build a Linux OS from scratch for this kind of architecture. Secondly we want also to have a small development platform for third party projects.
With 32MB of DRAM and up to 32MB of IDE compatible hard drive and full featured I/O interfaces like serial port, LPT, IDE interface, Watchdog Timer, I²C Interface, General Purpose Chip Select and last but not least a beautiful Ethernet Interface suit all our needs for an easy to handle development platform.