December 01, 2005
Shortly after I posted the thread concerning my shortness of memory :p a friend of mine who regularly emails me funny or painful videos sent me this
So that pretty much put a damper on my night since I was in a similar accident, but worse, like 12 years ago while off roading with my father (he used …
So that pretty much put a damper on my night since I was in a similar accident, but worse, like 12 years ago while off roading with my father (he used …
November 25, 2005
Fortunately I have never needed a wait state generator for anything I have ever designed. Now that I am using an expansion system I need one. This is due to the ability of the CPU to access memory on an expansion board and complete transfers to/from that memory. The CPU writes a control word to a r…
November 23, 2005
I am currently putting the finishing touches on the DMA control portion of the GPC. I have decided to use superior yet harder to find Intel DMA chips rather than the Zilog types. Why? Because they are much better to interface hardware to. Here is the schematic of the DMA section:
This circuit takes …
This circuit takes …
November 19, 2005
I have started to modify the Z80 based system I mentioned in my last entry and it feels much more satisfying then coding at a PC for me.
That is the PCB layout of the system I am modifying. It was a general purpose controller with 2 serial I/O ports, 4 timer/counter interfaces, and between 56 and 64…
That is the PCB layout of the system I am modifying. It was a general purpose controller with 2 serial I/O ports, 4 timer/counter interfaces, and between 56 and 64…
November 18, 2005
So I have decided to start designing hardware again. I like a lot of the threads here at GameDev and would like to continue to offer what little help I can to people here, so I will pretty much keep visiting and posting.
My current project is a more powerful version of a Z80 based multitasking GPC t…
My current project is a more powerful version of a Z80 based multitasking GPC t…
November 16, 2005
So I have been dabbling with programming PCs for several years now, doing it in spurts of about 1-2 months then 4-5 months of not.
I just can't get much satisfaction from it. I'm happier programming a homebrew system using DIP switches, LED's, and toggle switches. It just seems more "fun" that way, …
I just can't get much satisfaction from it. I'm happier programming a homebrew system using DIP switches, LED's, and toggle switches. It just seems more "fun" that way, …
November 14, 2005
Work has kept me pretty busy since my last entry. I have had a lot to keep me busy there between mission planning, flying, and resting.
Some things I have been thinking about are implementing a multiple line drawing algorithm using SIMD, but it seems like it won't work too well. Another thing I have…
Some things I have been thinking about are implementing a multiple line drawing algorithm using SIMD, but it seems like it won't work too well. Another thing I have…
November 07, 2005
I have been awoken at some odd hour yet again by the ever problem generating/solving brain. Happily asleep thenpoof I'm awake thinking about calculating the problem or raising m to the n power. Big deal you may say, so she's wanting to do simple math. As usual my brain was cranking away in another …
November 06, 2005
So I spent a fair amount of time yesterday and this morning trying to get around the fact that it appeared that I needed to do a lot of data shuffling to multiply two 4x4 matricies using SIMD instructions. I didn't want to accept that because shuffling data around is a waste of time to me unless it…
November 05, 2005
Ok, so I've been writing ASM code for all kinds of processors since I was like 14. Most of them have been from the x86 family, and when I have programmed them in a computer system it was usually DOS. As much as I don't like it I think it is about time to get into Windows programming.
What I'm curren…
What I'm curren…
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