Search found 423 matches

by cfbsoftware
Wed Apr 07, 2021 11:23 am
Forum: Bug Reports
Topic: INC and DEC fails when used in RECORDS
Replies: 1
Views: 113

Re: INC and DEC fails when used in RECORDS

The fix for this problem is now available in v7.2.3 Astrobe for Cortex-M3, M4 and M7.
by cfbsoftware
Wed Apr 07, 2021 11:14 am
Forum: Astrobe for ARM Cortex-M3, M4 and M7
Topic: v7.2.3 Astrobe for Cortex-M3, M4 and M7 have been released
Replies: 0
Views: 104

v7.2.3 Astrobe for Cortex-M3, M4 and M7 have been released

Minor maintenance upgrades v7.2.3 Astrobe for Cortex-M3, M4 and M7 have now been released. See What's New in Astrobe for Cortex-M3, M4 and M7 for a summary of the new features and bug-fixes since v7.0. If you are a registered user of the Professional or Personal Editions and your support period has ...
by cfbsoftware
Wed Mar 17, 2021 12:37 am
Forum: Astrobe for FPGA RISC5
Topic: What happens to out of range memory addresses?
Replies: 1
Views: 175

Re: What happens to out of range memory addresses?

Memory addressing limits are defined in Bootload.Mod. For the Artix-7 XC7A35T, using 192KB BRAM, MemLim is defined as 030000H. Read Section 8 Storage layout and management in the Project Oberon documentation (Astrobe menu > Help > Project Oberon) to see how the address range is partitioned and manag...
by cfbsoftware
Mon Mar 15, 2021 8:59 pm
Forum: Astrobe for FPGA RISC5
Topic: RAM port connection
Replies: 1
Views: 131

Re: RAM port connection

Yes - that is my understanding. Vivado issues the warning: width (24) of port connection 'adr' does not match port width (18) of module 'RAM' If you prefer you can modify the adr parameter in the RAM statement in RISC5Top.v to match the address width actually used in the RAM module for your particul...
by cfbsoftware
Fri Mar 12, 2021 8:20 am
Forum: Bug Reports
Topic: Summary of bug fixes since v7.0
Replies: 0
Views: 150

Summary of bug fixes since v7.0

See What's New in Astrobe for Cortex-M3, M4 and M7 for a summary of bug-fixes since v7.0.
by cfbsoftware
Tue Mar 09, 2021 9:24 pm
Forum: Astrobe for FPGA RISC5
Topic: Why are the SPI MISO and SCLK signals shorted together?
Replies: 2
Views: 160

Re: Why are the SPI MISO and SCLK signals shorted together?

My understanding is that only one SPI device on the RISC5 system is active at any time. In section 17.2.3. The SPI interface for the SD-card (disk) and the Net of the book Project Oberon - The Design of an Operating System, a Compiler, and a Computer. it states: Here, however, no use is made of SPI'...
by cfbsoftware
Wed Mar 03, 2021 11:04 pm
Forum: RISC5
Topic: Measure Temperature and Humidity using Digilent's Pmod HYGRO
Replies: 0
Views: 200

Measure Temperature and Humidity using Digilent's Pmod HYGRO

The attached source code shows how to measure temperature and humidity via I2C using Digilent's Pmod HYGRO board.

It should work on any of the development boards with I2C that are supported by v7.2 Astrobe for RISC5.
by cfbsoftware
Wed Mar 03, 2021 10:59 pm
Forum: Cortex-M3
Topic: Measure Temperature and Humidity using Digilent's Pmod HYGRO
Replies: 0
Views: 183

Measure Temperature and Humidity using Digilent's Pmod HYGRO

The attached source code shows how to measure temperature and humidity via I2C using Digilent's Pmod HYGRO board . It was been tested on STMicroelectronics Nucleo-L152RE development board but should work with little or no modification on any of the development boards with I2C that are supported by v...
by cfbsoftware
Tue Dec 29, 2020 11:48 pm
Forum: Astrobe for FPGA RISC5
Topic: Project Oberon Workstation on Artix 7-100T
Replies: 0
Views: 972

Project Oberon Workstation on Artix 7-100T

To help new users get started we have now made available, free of charge, a disk image and Verilog bitstream files specifically to run the Project Oberon Workstation on the Digilent Nexys A7-100 FPGA trainer board 'out-of-the-box'. This release is based on the Oberon sources (as at March 2020) and V...
by cfbsoftware
Fri Dec 18, 2020 10:21 pm
Forum: Astrobe for FPGA RISC5
Topic: RISC5 Oberon now on the Artix 7-100T
Replies: 0
Views: 1040

RISC5 Oberon now on the Artix 7-100T

We have successfully implemented Astrobe Embedded Project Oberon on the XC7A100T FPGA device of the Xilinx Artix 7 family. This means that Astrobe can have 480 KBytes of RAM available to it. This is 2-3 times more than our other supported implementations, allowing for more / larger applications to b...