Cocoacrumbs

Cocoacrumbs

All of the buildings, all of those cars
were once just a dream
in somebody's head
Mercy Street - Peter Gabriel

Retro Computing

Cocoacrumbs

13 minutes read

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Although the Zilog ZDS II tools do their job, they definitely show their age. The main bottleneck is the C Compiler which is stuck at C89 making compiling modern C code painful if not impossible. Even when modern C code is C89 compliant it’s still no guarantee to compile (a good example is LUA). The C compiler is rather slow as well.

Cocoacrumbs

8 minutes read

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Having had some hands-on experience now with the SSD1963 display I was somewhat disappointed in the performance. That should not have surprised me since there are a lot of pixels to be moved around with 24 bits colour depth. That’s roughly 1 MByte of memory that needs to be addressed with a humble 8 bits CPU. Even when it would run at 50 MHz, optimized assembly code is required and tricks to get the optimal results. And even then it probably would disappoint. There is a reason why our old…

Cocoacrumbs

13 minutes read

Pic 1

Now that my terminal works, it’s time to put it into a nice enclosure. And what better enclosure than a replica of the DEC VT100 terminal? After all, this is the terminal that introduced the famous ANSI terminal codes which are still in use today.

Cocoacrumbs

19 minutes read

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Since quite some time now, I’ve been intrigued by the Zilog eZ80 which is a successor of the well known Z80. While the eZ80 remains binary compatible with the Z80 it does have some interesting extensions like a flat 24 bits address space (no ugly 64k segments!) allowing to address up to 16 MByte. More info can be found on this Wikipedia page.

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