10 Dec
2024
10 Dec
'24
8:05 a.m.
On 2024-12-10 12:13 a.m., Tom Hunter via cctalk wrote:
If this were my project, I would read the VT100 manual
and design and
implement a serial driver and basic text window library from scratch
running on the bare hardware. It wouldn't be more than 1000 lines of C,
more likely something like 500 lines. I am a retired embedded
software engineer and did these things for a living. I would budget 2 to 3
days including reading the manual.
Tom
How may days using a assembler?
How many days to find the manual?
How many days to write a simple driver?
Joking aside, I wonder how bare metal the original project is?
Knowing what hardware is rather important, just to know what
will fit. Sounds like a OS is needed, not a just screen display software.
I am working on a bare metal machine here, just one step up from
toggling the bootstrap loader from the front panel. Once was ample.
Any one know the fine details of bit-banging a micro SD card, mostly
the reset sequence and where to sample or set CS_ , MSO , MSI and
clock. The boiler plate code is there, I just need Initialize data,
write 80 clocks, read byte, write byte routines, to reset the SD card.
Ben.
Another midnight snack a 1 AM.