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2010/11/22 - Fixed Video component, and increased vram to accomodate 80x40 resolution
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2010/11/22 - Fixed Video component, and increased vram to accommodate 80x40 resolution
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- Developed the basic io libs for SDCC for Z80SoC: crt0.s, putchar.c and getchar.c
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- Developed the basic io libs for SDCC for Z80SoC: crt0.s, putchar.c and getchar.c
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- ROM design has been implemented using coregen, and has now 16k
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- ROM design has been implemented using coregen, and has now 16k
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- ram size changed to 12Kb for S3E and 40Kb for DE1
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- ram size changed to 12Kb for S3E and 40Kb for DE1
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- Slight changes in memory layout (see readme for memory layout)
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- Slight changes in memory layout (see readme for memory layout)
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- New rom developed in C (SDCC)
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- New rom developed in C (SDCC)
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- Released C library for Z80SoC development usingg SDCC
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- Released C library for Z80SoC development usingg SDCC
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2010/02/26 - Modified RAM layout (again) to accomodate new features
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2010/02/26 - Modified RAM layout (again) to accommodate new features
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- Characters patern are now in RAM and can be redefined by the user
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- Characters pattern are now in RAM and can be redefined by the user
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- Video screen can now be configured up tp 40 rows by 80 columns
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- Video screen can now be configured up tp 40 rows by 80 columns
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- Characters can have double pixels (useful when width is less than 40 chars)
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- Characters can have double pixels (useful when width is less than 40 chars)
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- Memory cores was redefined, RAM is now 24K
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- Memory cores was redefined, RAM is now 24K
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- Modified top module and video module to accomodate new memory cores
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- Modified top module and video module to accommodate new memory cores
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- ROM demo modified to demonstrate char definition (redefine char "A")
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- ROM demo modified to demonstrate char definition (redefine char "A")
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2008/05/24 - Modified RAM layout to support new and future improvements
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2008/05/24 - Modified RAM layout to support new and future improvements
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- Added port 0x90 to write a character to video.
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- Added port 0x90 to write a character to video.
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- Cursor x,y automatically updated after writing to port 0x90
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- Cursor x,y automatically updated after writing to port 0x90
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