How to decode ZX Spectrum and C64 fonts

Leandro Jardim · 03 July 2014, 15:49

Hi,

I have the fonts that came with Paul Dunn's BASIn emulator and some C64 fonts dumps I downloaded before, and I am thinking in using the fonts on something, but I am unsure how to decode they, because I never owned these computers.

Anybody, for example, Paul Dunn, can say how BASin encodes the font in BASin files, and in C64 raw files?

Anybody have some fonts that you want to share? Thanks

Leffmann · 03 July 2014, 17:23

The fonts are 8x8 bitmaps of ASCII characters 32 through 127 in 1 bit per pixel, so the first 8 bytes is the blank space, the next 8 bytes is !, and so on.

Codetapper · 03 July 2014, 21:13

Fonts are trivial to rip with Maptapper using a savestate too!

Leandro Jardim · 04 July 2014, 00:00

Quote:

Originally Posted by Leffmann

The fonts are 8x8 bitmaps of ASCII characters 32 through 127 in 1 bit per pixel, so the first 8 bytes is the blank space, the next 8 bytes is !, and so on.

I did read that ZX Spectrum bitmaps are differently encoded from other 8-bit computers. Ah, what changes is the logical addressing on a true ZX Spectrum. Thanks!

Dunny · 04 July 2014, 02:05

Yeah, each font is 768 bytes, which is 96 characters with one byte per row (8 bytes per character). LSB is the rightmost pixel.

D.

03 July 2014, 15:49	#1
Leandro Jardim Registered User Join Date: Nov 2009 Location: Legoland Age: 45 Posts: 1,461	How to decode ZX Spectrum and C64 fonts Hi, I have the fonts that came with Paul Dunn's BASIn emulator and some C64 fonts dumps I downloaded before, and I am thinking in using the fonts on something, but I am unsure how to decode they, because I never owned these computers. Anybody, for example, Paul Dunn, can say how BASin encodes the font in BASin files, and in C64 raw files? Anybody have some fonts that you want to share? Thanks Last edited by Leandro Jardim; 03 July 2014 at 15:54.

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03 July 2014, 17:23	#2
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	The fonts are 8x8 bitmaps of ASCII characters 32 through 127 in 1 bit per pixel, so the first 8 bytes is the blank space, the next 8 bytes is !, and so on.

03 July 2014, 21:13	#3
Codetapper 2 contact me: email only! Join Date: May 2001 Location: Auckland / New Zealand Posts: 3,182	Fonts are trivial to rip with Maptapper using a savestate too!

04 July 2014, 02:05	#5
Dunny Registered User Join Date: Aug 2006 Location: Scunthorpe/United Kingdom Posts: 1,981	Yeah, each font is 768 bytes, which is 96 characters with one byte per row (8 bytes per character). LSB is the rightmost pixel. D.

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