DIY-Calculator Hardware:Community Portal

From DIY-Calculator_Hardware

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	The '''DIY Calculator Hardware Project''' consists of several sub projects:		The '''DIY Calculator Hardware Project''' consists of several sub projects:
-	# Creating the real [[#Hardware Project|hardware]]: a printed circuit board ([http://en.wikipedia.org/wiki/Printed_circuit_board PCB]) with the processing chips, an LCD module, switches, and connectivity to a host computer	+	# Creating the real [[DIY-Calculator_Hardware:Hardware Project|hardware]]: a printed circuit board ([http://en.wikipedia.org/wiki/Printed_circuit_board PCB]) with the processing chips, an LCD module, switches, and connectivity to a host computer
-	# Implementing the DIY Calculator [[#FPGA Project| CPU]] together with supporting functional blocks within a programmable logic chip (a so-called "Field Programmable Gate Array" - [http://en.wikipedia.org/wiki/FPGA FPGA]).	+	# Implementing the DIY Calculator [[DIY-Calculator_Hardware:FPGA Project|FPGA]] together with supporting functional blocks within a programmable logic chip (a so-called "Field Programmable Gate Array" - [http://en.wikipedia.org/wiki/FPGA FPGA]).
-	# Writing the [[#ROM Monitor Project|firmware]] running on the hardware, including a [http://en.wikipedia.org/wiki/Read-only_memory ROM] monitor	+	# Writing the [[DIY-Calculator_Hardware:ROM Monitor Project|firmware]] running on the hardware, including a [http://en.wikipedia.org/wiki/Read-only_memory ROM] monitor
-	# Adding a [[#Upload Utility Project|software tool]] for communicating with the hardware (e.g. uploading user programs)	+	# Adding a [[DIY-Calculator_Hardware:Upload Utility Project|software tool]] for communicating with the hardware (e.g. uploading user programs)
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-		+	On the projects pages you will find information about the progress of the project as well as technical details.
-	On this page you will find information about the progress of the project as well as technical details.	+	<br style="clear:left;" />
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-	== Hardware Project ==	+
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-	Block diagram of the PCB: [[Image:Blockdiagram.jpg|thumb|left]]	+
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-	The layout will somewhat resemble the layout of the (virtual) DIY Calculator with an 20x1 character LC display and a 70 keys sensor key matrix. Additionally there are connectivity means for a host PC:	+
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-	* serial RS-232 for uploading user programs and providing a console to the DIY Calculator CPU	+
-	* a JTAG programming connector; this connects to the PC's parallel port and enables the user to load new designs into the FPGA	+
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-	Additionally there will be sockets for external ROM/RAM chips and a large prototyping area for free use.	+
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-	Download the detailed schematics from here: [[Image:schematics.pdf]]	+
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-	Project status (19.Jul.2006): schematics completed, PCB layout work started	+
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-	== FPGA Project ==	+
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-	The PCB will contain an FPGA chip in the 10K-gates size-class (Lattice LFEC10E-3F256C) with a 256 pin BGA footprint. The included JTAG connector makes this a development board for general use. With ispLEVER, the FPGA development software suite from [http://www.latticesemi.com Lattice Semiconductor], the FPGA design can be altered or a completely new design can be made. The entry level version of ispLEVER (ispLEVER-Starter) can be downloaded freely from [http://www.latticesemi.com/products/designsoftware/isplever/ispleverstarter.cfm Lattice]. With Lattice's [http://www.latticesemi.com/products/designsoftware/ispvmsystem/index.cfm ispVM System] the design can be transferred via JTAG to the DIY Calculator PCB.	+
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-	== ROM Monitor Project ==	+
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-	== Upload Utility Project ==	+

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Current revision

The DIY Calculator Hardware Project consists of several sub projects:

1. Creating the real hardware: a printed circuit board (PCB) with the processing chips, an LCD module, switches, and connectivity to a host computer
2. Implementing the DIY Calculator FPGA together with supporting functional blocks within a programmable logic chip (a so-called "Field Programmable Gate Array" - FPGA).
3. Writing the firmware running on the hardware, including a ROM monitor
4. Adding a software tool for communicating with the hardware (e.g. uploading user programs)

On the projects pages you will find information about the progress of the project as well as technical details.