General Stuff(tm)

[stephen_usher]

Yep, the Advanced Passenger Train (Prototype).

[stephen_usher]

With a mind to the Apricot hard drive project I've got myself some Raspberri Pi Picos (5 for £15 from Pimoroni!).

The 8 bit wide PIO looks promising and within MicroPython you can talk to SD cards via SPI and read/write to files on a FAT filesystem easily.

Now, whether 8 bit PIO and the SPI library stuff will play nicely together is another matter.

Oh, the other difficulty... I'm going to have to learn Python. How hard can that be? ;-)

[rubber_jonnie]

Yep, the Advanced Passenger Train (Prototype).

Cool :)

[rubber_jonnie]

With a mind to the Apricot hard drive project I've got myself some Raspberri Pi Picos (5 for £15 from Pimoroni!).

The 8 bit wide PIO looks promising and within MicroPython you can talk to SD cards via SPI and read/write to files on a FAT filesystem easily.

Now, whether 8 bit PIO and the SPI library stuff will play nicely together is another matter.

Oh, the other difficulty... I'm going to have to learn Python. How hard can that be? ;-)

Nice price :)

As for Python, if I can do it, you should be fine.

One word though. Indent!

[stephen_usher]

As for Python, if I can do it, you should be fine.

One word though. Indent!

I know! That's the problem with Python, whitespace is syntactic.

[stephen_usher]

I've brought out the big guns in readiness for my PLCC-44 break-out board arriving tomorrow so I can get started trying to figure out how the Sun 3/80's DECODE1 chip generates the control signals for the serial port chips.

IMG_2585.jpg

I'll use the 16 channel logic analyser on the Tektronix MSO 'scope to see what the inputs are and see what triggers the output for the tty-b chip, from there I should be able to infer, with the help of the disassembled boot ROM contents, how to use a GAL to replace the missing signal output, hopefully.

[rubber_jonnie]

I've brought out the big guns in readiness for my PLCC-44 break-out board arriving tomorrow so I can get started trying to figure out how the Sun 3/80's DECODE1 chip generates the control signals for the serial port chips.

IMG_2585.jpg

I'll use the 16 channel logic analyser on the Tektronix MSO 'scope to see what the inputs are and see what triggers the output for the tty-b chip, from there I should be able to infer, with the help of the disassembled boot ROM contents, how to use a GAL to replace the missing signal output, hopefully.

Sounds pretty cool :)

[stephen_usher]

Bother! No-one was at reception when DHL just tried to deliver the the PCBs, so back to the depot they went.

[BennehBoy]

I just searched your DSO on ebay and my eyes popped out at the prices!

[rubber_jonnie]

Bother! No-one was at reception when DHL just tried to deliver the the PCBs, so back to the depot they went.

That's a bit rubbish!!