Solid State

Jun 29

SDS#54: Response

Response by Avalon for Amiga AGA, 2nd place at The Gatering 1995

by The_woz | Amiga, Videos | permalink | 0 comments

Jun 22

SDS#53: Bloody Domination

Bloody Domination by Samar, for the Commodore 64. Winner of Gravity'97 Demo Compo.

by The_woz | Commodore, Videos | permalink | 0 comments

Jun 19

After a forced break (moving to a new house), I'm back, the english version of this entry may not be very meaninfull to you (unless you collect manuals no matter the language they're written on ;))

Click to download the spanish version of the Simons BASIC manual, it have a pecularity, Commodore is translated as 'computadora' (computer) for some obscure reason. The quality isn't the best since it's been scanned from a copy of a copy.

Download simonsbasic.zip (7MB)

by The_woz | Commodore | permalink | 0 comments

May 18

SDS#52: Emergency

Emergency by Real Masters for the ZX-Spectrum, 6th place Funtop 1998 ZX Demo compo

by The_woz | Videos | permalink | 2 comments

May 11

SDS#51: Ugly kid

Ugly kid by triebkraft & 4th Dimension, 1st place at DiHALT2007 zxdemo compo.

by The_woz | Videos | permalink | 0 comments

Apr 27

SDS#50: Power Up

Power Up by Extreme Entertainment for the ZX-Spectrum, 3rd place at Enlight 1997

by The_woz | Videos | permalink | 0 comments

Apr 9

Drean Commodore 64 (Correction)

A while back, i talked about the PAL-N VIC-II present on the Argentinean license 'built' C-64s.

But, thanks to Juan Carlos Fekete and electroeject, members of Retrocomputacion.com forum, I realized that my calculations were wrong.

I assumed that the clock circuitry is working in PAL mode, which means that the crystal frecuency gets divided by 18 to get the processor clock frequency. In fact, the clock circuitry is working in NTSC mode: The crystal frequency gets divided by 14 to get the processor clock frequency.

Thus, according to the previous calculations the crystal frequency must be:

Processor Clock = 1.014 MHz

Crystal frequency = 1.014 MHz * 14 = 14.196 MHz

WRONG!

Second mistake, I didn't noticed that the colorburst carrier frequency is the crystal frequency divided by 4.

The colorburst carrier frequency for PAL-N is 3.582056MHz

3.582056MHz * 4 = 14.328224 MHz

This is confirmed by this picture by Juan Carlos Fekete of a rev.A motherboard (note the 6572R1):

Knowing the crystal frequency, we can now calculate the processor clock frequency:

Processor Clock = 14.3282 MHz / 14 = 1.02344 MHz

That's a little faster than a NTSC machine (1.02227 MHz).

by The_woz | Articles, Commodore | permalink | 0 comments

Apr 6

SDS#49: Rush

Rush by Singular Crew, a wild demo running on a C64 + IDE64, featuring the first 25fps fullscreen animation on the C64. 5th place on Breakpoint 2008 wild compo.