Felipe Sanches

Software Freedom activist, FontBakery developer/maintainer, retrocomputing enthusiast and MAME code contributor.

[Felipe Sanches @juca_gnu]

Last Nov 2015 I prototyped an interactive #arcade #3Dmodel layout system for #MAME https://t.co/i4Ov85vGUH #sega

[Felipe Sanches @juca_gnu]

@LuizaJarovsky But the NOKIA 3310 was released in the year 2000... (https://t.co/OYz2Pgj0u4)

[Felipe Sanches @juca_gnu]

@elonmusk https://t.co/ZLnviarVXV

[Felipe Sanches @juca_gnu]

@SemanaEncerrada Chamando o Gibeira: "Traz o gelo!"

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp I noticed that there are 66 rows, which are 2 more than the 64 what would be needed for exactly 2kbytes of ROM. Maybe there's 1 parity bit for every 32 bits of data?

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp I don't know. I haven't seen much Z8 code other than this snippet.

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp With this custom build you can run any of these Z8-based emulators with MAME's -debug option which will give you an interactive debugger, letting you inspect memory contents, view disasm listings, place breakpoints, etc.

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp For a custom build:

QT_SELECT=5 make SUBTARGET=z8devices SOURCES=src/mame/handheld/pensebem.cpp,src/mame/fidelity/msc.cpp,src/mame/learsiegler/adm23.cpp,src/mame/metro/metro.cpp,src/mame/misc/amerihok.cpp,src/mame/quantel/dpb7000.cpp,src/mame/skeleton/bert.cpp TOOLS=1 REGENIE=1

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp The TOOLS=1 option will make it build MAME's Unidasm, which contains a standalone Z8 disassembler.

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp These are the MAME drivers that rely on the Z8 mcu: src/mame/ddr/jtc.cpp
src/mame/fidelity/msc.cpp
src/mame/learsiegler/adm23.cpp
src/mame/metro/metro.cpp
src/mame/misc/amerihok.cpp
src/mame/quantel/dpb7000.cpp
src/mame/skeleton/bert.cpp

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp There are a few devices emulated on MAME that use a Z8 chip, so we may take a look at the ROMs (and disasm) of those to collect some samples of typical code patterns. Also MAME has a good disassembler for the Z8.

[Felipe Sanches @juca_gnu]

@travisgoodspeed @lafp This is amazing!!!

[Felipe Sanches @juca_gnu]

@_charlescornell Can you re-harm this, please? https://t.co/XdCmjm7JHN

[Felipe Sanches @juca_gnu]

@this_is_mallory The real reason why we can't see is because your webcam is covered!

[Felipe Sanches @juca_gnu]

@eliheuer @FontTools The goal is to make it even clearer to the users (and developers) that FontBakery is not vendor-biased and can be used by anyone who needs automated quality assurance for fonts!

[Eli Heuer @eliheuer]

FontBakery is now part of the @FontTools organization on GitHub!
https://t.co/hXoVgAlnrb

[Eli Heuer @eliheuer]

I wrote a new FontBakery check that was merged into the Universal Profile recently! It gives a WARN if uppercase glyphs are not vertically centered in the em box (with %5 of the UPM as a margin of error).

https://t.co/yU6gIJqxQP

[Felipe Sanches @juca_gnu]

@cozinhabruta CORTANDO FIO DENTAL

[Felipe Sanches @juca_gnu]

@lucasvillareal All I Have Are Negative Thoughts, #LEGO

[Felipe Sanches @juca_gnu]

This is frustrating! #lego #joker