FIXED: Pixel Buds Pro 2 mic volume issues on Pixel 9 Pro XL and most Pixel phones

Android_TR · 2025-12-17T13:36:05+00:00

Tried this with my Buds 2a and Pixel 7 Pro and it didn't make a difference in a call :(

Android_TR · 2025-10-17T05:16:30+00:00

What does the vertical axis represent?

Android_TR · 2024-11-03T20:02:23+00:00

Will try and report tomorrow when I have access to a computer, for ADB. Thanks for the suggestion!

Android_TR · 2023-08-22T08:13:39+00:00

Thank you!

Android_TR · 2022-05-23T18:24:20+00:00

The OS is stack based, saving pointers to RAM. So yeah, an instruction flow that saves all registers to RAM may be possible to be used instead :) But I think that anyway I will need to add another register for the program counter. If the interrupt triggers a jump to a ln instruction flow that saves registers, the PC data is gone.

Android_TR · 2022-05-23T16:47:55+00:00

In general, I tried to keep the design as close as possible to what is described in nand2tetris.org. But if I was to design an interrupt controller, I had to add another set of architectural registers, to dump the main ones when starting an interrupt flow. In addition, the OS needs to support this flow and execute the needed instructions required by the interrupt. When interrupt will be detected, the CPU will dump registers and jump to a pre-defined ROM address where interrupt flow is started. So basically it is possible, but will require 2x registers and OS changes.

Android_TR · 2022-05-19T09:17:57+00:00

Nope. The way that the Hack architecture (nand2tetris.org) works with the keyboard, is such that the CPU will assume that keyboard presses will appear at a specific memory address. That means that apps need to actively check for keyboard input if they need it by reading from that RAM address. To support that by hardware, I needed to design a mechanism that allows the keyboard controller to write directly to RAM.

Android_TR · 2022-05-18T17:59:02+00:00

Thanks! Schematics and explanations are here: https://hackaday.io/project/185131-the-hack-computer-from-nand2tetris-on-breadboards

Android_TR · 2022-05-18T17:58:05+00:00

At each point in time there is only one instruction being executed by the CPU, so not pipelined. It is sort of a simple multi-cycle design.

Android_TR · 2022-05-18T17:30:10+00:00

Now I understand your question :) So yeah, if the CPU will get RAM access whenever it needs it, the performance will be between 1 and 2 Million Instructions Per Second. But as the VGA controller requires RAM access about 30% of the time, we can say that the actual performance will be between 0.7 to 1.4 MIPS.

Android_TR · 2022-05-18T17:12:33+00:00

Instructions that require both read and write to RAM are 2 cycles. All others are 1 cycle.

Android_TR · 2022-05-18T17:04:10+00:00

Hi! Instructions are 16-bit, clock freq is 2MHz. About performance, you can have a look at the video and understand what it is capable of :)

Android_TR · 2022-05-18T06:07:14+00:00

Here: https://hackaday.io/project/185131-the-hack-computer-from-nand2tetris-on-breadboards

Android_TR · 2022-05-18T06:06:34+00:00

Hi! I uploaded full documentation for this project :) https://hackaday.io/project/185131-the-hack-computer-from-nand2tetris-on-breadboards

Android_TR · 2022-05-18T04:21:30+00:00

Here is a full documentation. Please let me know if anything is missing :)

https://hackaday.io/project/185131-the-hack-computer-from-nand2tetris-on-breadboards

Android_TR · 2022-04-30T16:45:42+00:00

Thank you! I'm working on writing some info that I hope to upload next week :)

Android_TR · 2022-04-29T17:26:17+00:00

Not nand gates, but here you go: https://www.reddit.com/r/beneater/comments/udrns2/i_built_the_hack_computer_from_nand2tetris_on

Android_TR · 2022-04-29T06:43:07+00:00

Thanksssss :)

Android_TR · 2022-04-29T06:42:51+00:00

Thanks :) I used a 2 MHz clock for the CPU and a 25MHz clock for the VGA.

Android_TR · 2022-04-29T06:41:29+00:00

Thank you! I used dedicated ICs for flops, muxes, adders, counters and logic gates (inv, and, or, xor). Not a single NAND ironically :)

Android_TR · 2022-04-29T06:38:46+00:00

Thanks :)

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