RandallHyde.com

For the next couple of weeks, The Book of I2C is part of a Humble Bundle. Save $$$!
https://www.humblebundle.com/books/electronics-for-the-curious-no-starch-books?hmb_source=&hmb_medium=product_tile&hmb_campaign=mosaic_section_1_layout_index_1_layout_type_threes_tile_index_3_c ...

Here's a quick correction to Listing5-14 (which appears as Listing5-5-UserStack in the on-line files).
The declaration of the user stack was:


.align 4
smallStk: .fill 256, .-.
endSmallStk:


It really needs to be:

.align 4
smallStk: .space 256, .-. // .fill 256, 1, 0 also works
endSmallStk ...

It's that time of the year again!
No Starch Press is offering some great deals on some great books.
Check out the "Computer Science the Fun Way" Humble Bundle.
Running for three weeks, starting March 3, 2025
https://www.humblebundle.com/books/comp ... arch-books

Support files for "The Art of ARM Assembly" are now available at:
https://github.com/randyhyde/artofarm

printf uses the Intel/Windows ABI, where register RCX and RDX (among many others) are volatile and can be overwritten by the code being called. That's why you had to reload these registers -- printf is overwriting their values (true for R8 and R9, too).

Here's a useful link (in case you've missed it), to some code and documentation by Tony Tribelli.
https://github.com/atribelli/asmmobile

Hi all,
I finally did the last pass on the Art of ARM Assembly (10/8/2024). Expect publication (in freeware form) in January 2025.
In the meantime, you can preorder the book and the the electronic preview from No Starch Press (https://nostarch.com/art-arm-assembly-volume-1)
You can also download ...

Barnes & Noble is currently running another sale for 25% off pre-order titles - including Art of ARM Assembly - this week, starting today (runs Sept. 4-6).

Here's the product page on their site:

https://www.barnesandnoble.com/w/the-art-of-arm-assembly-randall-hyde/1143843472?ean=9781718502826 ...

Here is a sample program (from "The Art of ARM Assembly, Volume 2") that converts a 64-bit double-precision floating-point value to a string. This code was created and tested on a Pi 400 using a 32-bit version of PiOS. It easily ports to Cortex-M7F CPUs (e.g., the Teensy 4.x) and other 32-bit based ...

Recently I've been working on sample programs for "The Art of ARM Assembly, Volume 2." When working on the numeric conversion examples, I chose not to simply copy the algorithms I used in "The Art of 64-bit Assembly" and "The Art of ARM Assembly, Volume 1." Instead, I experimented with some new ...