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* fix for sdcc makefileNao Pross2017-05-024-32/+122
| | | | | | fix for the old makefile, because it could't compile more than one source file. new libc directory with mem.c to start implementing the standard C library (or at least the part we need).
* Merge branch 'master' into naoprossNao Pross2017-05-029-101/+62
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| * switch to sdccNao Pross2017-05-029-101/+62
| | | | | | | | | | | | | | | | | | | | - update of the makefile to use sdcc, since it is more popular and it's easier to insall on other computers - fix of crt0.s (old loader.asm) for the new compiler - change of the structure in the source code folder to separate betweeen libc and kernel code
| * added missing makefile for z80 and fixed gitignoreNao Pross2017-03-251-0/+27
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* | switch from GAL (pld) to M4 32/32 CPLDNao Pross2017-04-1319-296/+621
| | | | | | | | | | | | add M4 32/32 CPLD datasheet new VHDL code with better control over the address space thanks to the M4 which has a 16 bit input port
* | added missing makefile for z80 and fixed gitignoreNao Pross2017-03-251-0/+27
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* created bios/kernel source code structureNao Pross2017-03-236-0/+98
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* hardware nearly finishedNao Pross2017-03-176-0/+296
| | | | | | | | | | | | | doc: added datasheets for - GAL16V8 - MAX214 - MAX232 added script to build doc under windows with miktex updated notes hw: finished i/o devices and bus viewer sw: created files for pld programming
* sw: started to implement serial on linux sideNao Pross2017-03-053-0/+46
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* sw: copied flash tool source from gameboymodNao Pross2017-02-1410-0/+417