It's look like very old thing to me: It's in Black and White display. As you can see, it has a socket on the top of it . What's the name and model of this computer monitor?

I bought an LC 475 for parts and repair of ebay. When it arrived it seemed to work okay but the video was all stripey. After some diagnosing I spotted a rotten trace near the the VRAM simms. I repaired the rotten trace with a jumper and I got my video working. But now I've got chimes of death. R...

Let's say you have a hypothetical 8-bit processing machine with 256 bytes of memory. You want to load the value stored in memory location $f2 into a register. However, with a data bus of just 8 bits, you can't use all of the memory unless you want to have no room left for an opcode. And having mo...

Short story I am curios about when file based communication / design patterns became obsolete in enterprise applications. Although I have been programming for more than 15 years at enterprise level, I have never worked with file based communication. This lead me to be very surprised to see them ...

The native floppy disk format/layout or "filesystem" used by Amstrad microcomputers such as the CPC and PCW range and by the Sinclair Spectrum +3 are versions of one that came from CP/M. In Amstrad parlance it might be referred to as "AMSDOS" and in Spectrum parlance "+3DOS" or "PLUS3DOS". But t...

How can I find where in memory to locate the current Basic program in an Amstrad CPC/PCW family Zilog Z80-based microcomputer? Is it always the same address? A different well-known address depending on the model, ROM version, or Basic version? A changeable address that can be determined by look...

I'm trying to figure out how the Auxiliary Carry flag on the 8080 is affected by logical instructions. Reading the Intel 8080 manual, it seems that logical instructions do not affect AC: The Auxiliary Carry bit will be affected by all addition, subtraction, increment, decrement, and compare ...

I'm just curious why the 8086 seems to be lacking in an adjust opcode for fixing up packed BCD multiplication. It seems like it would be a useful thing, and packed BCD seems to be more common to begin with.

I have installed Microsoft C 5.10 on DOS 6.22. It created a 'LIB' directory with static libraries to link against. Now I need to extract the symbols and the code for the functions from them, but can't find the format documented anywhere: ninja@desktop:/mnt/d/backup/dos/msc510-install/LIB$ ls *.L...