Shows up late.

I have modified TinyBasic a few times (mostly for the 68k and other projects), and it may save some bytes if the BASIC is not tokenized.
The long variable name support has got to be using up some bytes. For TinyBasic I added local variables on the stack which removes some of the ...

That is awesome. I wonder if it is possible to somehow 3D-print a working 6502?

'H670 would work great. There are also other IC's that could be used to map memory.
I am reminded of the 74LS612. A while back I saw some 6829's for sale.

Is the 'HC670 for a CMOS system?
Need to be careful interfacing CMOS to other standards.

Hey,
Are there login issues with AnyCPU.org?

I cannot log in to anycpu.org, logs me back out again right away. Then asks me to login to post. Login. Go to post. asks me to login again. etc.

Officially I'm about 59.75

Can you use a simple resistor divider?

The photo is crappy. IRL looks much better. Taken with a phone which thought it was a QR-code.
1st mile stone: text output.
At reset a randomizer fills the screen with random characters.

Added legacy operation mode by pulling the 'leg' signal high.
32x16 chars centered in the display.

I have been enthused to create a 6847 core in System Verilog. It will be a slight modification due to the intended output to a VGA monitor in 800x600 mode.
The display will be 50 by 25 characters instead of 32x16.
Alpha / graphics modes work in a manner similar to the 6847.
100x100, 200x100, 200x150 ...

Putting the counter on the upper bits is a decent idea. It would work well if the display memory is used to store the glyphs and the glyphs are copied there from ROM. One thing to consider is finding or writing a piece of software that will allow editing character glyphs and save them in a binary ...

the character", and the upper 4 address lines would go to the counter. I think it is more likely that the lower address bits are connected to the counter, and address bits 4 to 11 of the ROM connected to the data bus. That way the first row of a bitmap is at address 0, the second at address 1, etc ...

I made a sketch for an alternate external ROM system. I think something along these lines would work. But it needs the CPU to copy the character images. It may be fewer parts if there is already a system ROM.

I have used the 6847 before, but not with an external character ROM. I assume you are referring to the schematic figure 23 in the data-book? It may be a little confusing but data lines coming from the display memory need to be connected to the address lines of the character generator. The address ...

I have what is supposed to be a 6551 compatible uart. It is about as complex as need be. It does sampling and majority logic on the bit receive. It also has fifos. It is <400 LUTs. There are a couple of top level interfaces, one with component discovery.

An issue with the timing is that the hosts ...

HDMI and DVI are similar; they are both digital standards, but I believe HDMI encodes things into fewer signals. I was looking at some of the beefier embedded SBCs that support HDMI output. However, supporting additional features increases the power consumption. HDMI requires only eight signals, no ...