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Merge pull request #154 from smuehlst/c1p_screenlayout_macro
Support for different screen layouts via macro-based modules
This commit is contained in:
Oliver Schmidt
commit
c3bec9368b
@ -10,7 +10,7 @@ SYMBOLS {
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}
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}
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MEMORY {
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MEMORY {
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# for size of ZP, see runtime/zeropage.s and c1p/extzp.s
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# for size of ZP, see runtime/zeropage.s and c1p/extzp.s
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ZP: file = "", define = yes, start = $0002, size = $001A + $0006;
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ZP: file = "", define = yes, start = $0002, size = $001A + $0020;
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HEAD: file = %O, start = $0000, size = $00B6;
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HEAD: file = %O, start = $0000, size = $00B6;
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RAM: file = %O, define = yes, start = %S, size = __HIMEM__ - __STACKSIZE__ - %S;
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RAM: file = %O, define = yes, start = %S, size = __HIMEM__ - __STACKSIZE__ - %S;
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}
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}
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@ -4418,6 +4418,7 @@ compiler, depending on the target system selected:
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<item><tt/__LUNIX__/ - Target system is <tt/lunix/
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<item><tt/__LUNIX__/ - Target system is <tt/lunix/
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<item><tt/__LYNX__/ - Target system is <tt/lynx/
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<item><tt/__LYNX__/ - Target system is <tt/lynx/
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<item><tt/__NES__/ - Target system is <tt/nes/
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<item><tt/__NES__/ - Target system is <tt/nes/
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<item><tt/__OSIC1P__/ - Target system is <tt/osic1p/
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<item><tt/__PET__/ - Target system is <tt/pet/
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<item><tt/__PET__/ - Target system is <tt/pet/
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<item><tt/__PLUS4__/ - Target system is <tt/plus4/
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<item><tt/__PLUS4__/ - Target system is <tt/plus4/
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<item><tt/__SIM6502__/ - Target system is <tt/sim6502/
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<item><tt/__SIM6502__/ - Target system is <tt/sim6502/
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@ -348,6 +348,7 @@ Here is a description of all the command line options:
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<item>lunix
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<item>lunix
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<item>lynx
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<item>lynx
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<item>nes
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<item>nes
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<item>osic1p
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<item>pet (all CBM PET systems except the 2001)
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<item>pet (all CBM PET systems except the 2001)
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<item>plus4
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<item>plus4
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<item>sim6502
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<item>sim6502
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@ -819,6 +820,11 @@ The compiler defines several macros at startup:
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Is defined if the compiler was called with the <tt/-Os/ command line option.
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Is defined if the compiler was called with the <tt/-Os/ command line option.
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<tag><tt>__OSIC1P__</tt></tag>
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This macro is defined if the target is the Ohio Scientific Challenger 1P
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(-t osic1p).
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<tag><tt>__PET__</tt></tag>
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<tag><tt>__PET__</tt></tag>
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This macro is defined if the target is the PET family of computers (-t pet).
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This macro is defined if the target is the PET family of computers (-t pet).
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37
doc/osi.sgml
37
doc/osi.sgml
@ -6,7 +6,7 @@
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<author>
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<author>
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<url url="mailto:stephan.muehlstrasser@web.de" name="Stephan Mühlstrasser">,<newline>
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<url url="mailto:stephan.muehlstrasser@web.de" name="Stephan Mühlstrasser">,<newline>
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<url url="mailto:greg.king5@verizon.net" name="Greg King">
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<url url="mailto:greg.king5@verizon.net" name="Greg King">
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<date>2015-03-08
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<date>2015-03-17
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<abstract>
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<abstract>
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An overview over the Ohio Scientific runtime system as it is implemented for the cc65 C
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An overview over the Ohio Scientific runtime system as it is implemented for the cc65 C
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@ -33,7 +33,7 @@ information.
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<sect>Targets<p>
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<sect>Targets<p>
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Currently the target "osic1p" is implemented. This works for the Ohio Scientific
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Currently the target "osic1p" is implemented. This works for the Ohio Scientific
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Challenger 1P machine.
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Challenger 1P machine and for the Briel Superboard /// replica.
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<sect>Program file formats<p>
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<sect>Program file formats<p>
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@ -123,7 +123,7 @@ Challenger 1P, which is implicitly used via <tt/-t osic1p/. The
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osic1p package comes with additional secondary linker config files, which are
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osic1p package comes with additional secondary linker config files, which are
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used via <tt/-t osic1p -C <configfile>/.
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used via <tt/-t osic1p -C <configfile>/.
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<sect1>default config file (<tt/osic1p.cfg/)<p>
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<sect1>Default config file (<tt/osic1p.cfg/)<p>
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The default configuration is tailored to C programs.
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The default configuration is tailored to C programs.
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@ -161,6 +161,36 @@ There is no specific support for direct hardware access.
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There are no loadable drivers available.
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There are no loadable drivers available.
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<sect>Support for different screen layouts<p>
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By default the conio library uses a 24 columns by 24 lines screen layout
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for the Challenger 1P, like under BASIC. In addition to that there is support
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for other screen layouts with extra modules.
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There is a module <tt/screen-c1p-24x24.o/ in the OSI-specific
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cc65 runtime library that contains all conio functions that depend
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on the screen layout. No further configuration is needed for using the
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default screen layout of the Challenger 1P.
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For other screen layouts additional versions of the screen module are
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available. The linker finds these modules without further configuration
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if they are specified on the compiler or linker command line. The
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extra module then overrides the default module.
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Sample <tt/cl65/ command line to override the default screen
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module with the module <tt/osic1p-screen-s3-32x28.o/:
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<tscreen><verb>
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cl65 -o hello -t osic1p osic1p-screen-s3-32x28.o hello.c
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</verb></tscreen>
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Currently the following extra screen configuration modules are implemented:
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<itemize>
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<item><tt>osic1p-screen-s3-32x28.o</tt>: 32 columns by 28 lines mode
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for Briel Superboard ///</item>
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</itemize>
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<sect>Limitations<p>
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<sect>Limitations<p>
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<sect1>stdio implementation<p>
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<sect1>stdio implementation<p>
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@ -200,3 +230,4 @@ freely, subject to the following restrictions:
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</enum>
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</enum>
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</article>
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</article>
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@ -1,19 +0,0 @@
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;
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; based on PET implementation
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;
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; originally by:
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; Ullrich von Bassewitz, 26.10.2000
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;
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; Screen size variables
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;
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.export screensize
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.include "extzp.inc"
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.include "osic1p.inc"
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.proc screensize
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ldx #SCR_WIDTH
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ldy #SCR_HEIGHT
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rts
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.endproc
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@ -1,31 +0,0 @@
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;
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; void clrscr (void);
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;
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.export _clrscr
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.import plot
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.include "extzp.inc"
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.include "osic1p.inc"
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; Adapted from the Challenger Character Graphics
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; Reference Manual, "2.3.3 MACHINE LANGUAGE SCREEN CLEAR"
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; This is self-modifying code!
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BANKS = VIDEORAMSIZE / $100
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_clrscr:
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lda #' '
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ldy #BANKS
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ldx #$00
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staloc:
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sta SCRNBASE,X
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inx
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bne staloc
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inc staloc+2
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dey
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bne staloc
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lda #>(SCRNBASE) ; Load high byte
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sta staloc+2 ; Restore base address
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lda #$00 ; Cursor in upper left corner
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sta CURS_X
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sta CURS_Y
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jmp plot ; Set the cursor position
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@ -1,100 +0,0 @@
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;
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; cputc/cputcxy for Challenger 1P
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; Based on PET/CBM implementation
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;
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; void cputcxy (unsigned char x, unsigned char y, char c);
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; void cputc (char c);
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;
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.export _cputcxy, _cputc, cputdirect, putchar
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.export newline, plot
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.import popa, _gotoxy
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.include "osic1p.inc"
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.include "extzp.inc"
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FIRSTVISC = $85 ; Offset of first visible character in video RAM
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LINEDIST = $20 ; Offset in video RAM between two lines
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BLOCKSIZE = $100 ; Size of block to scroll
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_cputcxy:
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pha ; Save C
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jsr popa ; Get Y
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jsr _gotoxy ; Set cursor, drop x
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pla ; Restore C
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; Plot a character - also used as internal function
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_cputc: cmp #$0A ; CR?
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bne L1
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lda #0
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sta CURS_X
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beq plot ; Recalculate pointers
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L1: cmp #$0D ; LF?
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beq newline ; Recalculate pointers
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cputdirect:
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jsr putchar ; Write the character to the screen
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; Advance cursor position
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advance:
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cpy #(SCR_WIDTH - 1)
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bne L3
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jsr newline ; New line
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ldy #$FF ; + cr
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L3: iny
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sty CURS_X
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rts
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newline:
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inc CURS_Y
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lda CURS_Y
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cmp #SCR_HEIGHT ; Screen height
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bne plot
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dec CURS_Y ; Bottom of screen reached, scroll
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ldx #0
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scroll:
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.repeat 3, I ; Scroll screen in three blocks of size
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; BLOCKSIZE
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lda SCRNBASE+(I*BLOCKSIZE)+FIRSTVISC+LINEDIST,x
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sta SCRNBASE+(I*BLOCKSIZE)+FIRSTVISC,x
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.endrepeat
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inx
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bne scroll
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lda #' ' ; Clear bottom line of screen
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bottom:
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sta SCRNBASE+(3*BLOCKSIZE)+FIRSTVISC,x
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inx
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cpx #SCR_WIDTH
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bne bottom
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plot: ldy CURS_Y
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lda ScrLo,y
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sta SCREEN_PTR
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lda ScrHi,y
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sta SCREEN_PTR+1
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rts
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; Write one character to the screen without doing anything else, return X
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; position in Y
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|
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putchar:
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ldy CURS_X
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sta (SCREEN_PTR),y ; Set char
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rts
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; Screen address tables - offset to real screen
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|
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.rodata
|
|
||||||
|
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ScrLo: .byte $85, $A5, $C5, $E5, $05, $25, $45, $65
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.byte $85, $A5, $C5, $E5, $05, $25, $45, $65
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.byte $85, $A5, $C5, $E5, $05, $25, $45, $65
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.byte $85
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||||||
|
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ScrHi: .byte $D0, $D0, $D0, $D0, $D1, $D1, $D1, $D1
|
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.byte $D1, $D1, $D1, $D1, $D2, $D2, $D2, $D2
|
|
||||||
.byte $D2, $D2, $D2, $D2, $D3, $D3, $D3, $D3
|
|
||||||
.byte $D3
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|
||||||
16
libsrc/osic1p/extra/screen-s3-32x28.s
Normal file
16
libsrc/osic1p/extra/screen-s3-32x28.s
Normal file
@ -0,0 +1,16 @@
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|
;
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||||||
|
; Implementation of screen-layout related functions for Superboard ///
|
||||||
|
;
|
||||||
|
|
||||||
|
.include "../osiscreen.inc"
|
||||||
|
|
||||||
|
S3_SCR_BASE := $D000 ; Base of Superboard /// video RAM
|
||||||
|
S3_VRAM_SIZE = $0400 ; Size of Superboard /// video RAM (1 kB)
|
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|
S3_SCR_WIDTH = $20 ; Screen width
|
||||||
|
S3_SCR_HEIGHT = $1C ; Screen height
|
||||||
|
S3_SCR_FIRSTCHAR = $80 ; Offset of cursor position (0, 0) from base
|
||||||
|
; of video RAM
|
||||||
|
S3_SCROLL_DIST = $20 ; Memory distance for scrolling by one line
|
||||||
|
|
||||||
|
osi_screen_funcs S3_SCR_BASE, S3_VRAM_SIZE, S3_SCR_FIRSTCHAR, \
|
||||||
|
S3_SCR_WIDTH, S3_SCR_HEIGHT, S3_SCROLL_DIST
|
||||||
@ -1,10 +1,4 @@
|
|||||||
; Addresses
|
; Addresses
|
||||||
SCRNBASE := $D000 ; Base of video RAM
|
|
||||||
INPUTC := $FD00 ; Input character from keyboard
|
INPUTC := $FD00 ; Input character from keyboard
|
||||||
RESET := $FF00 ; Reset address, show boot prompt
|
RESET := $FF00 ; Reset address, show boot prompt
|
||||||
KBD := $DF00 ; Polled keyboard register
|
KBD := $DF00 ; Polled keyboard register
|
||||||
|
|
||||||
; Other definitions
|
|
||||||
VIDEORAMSIZE = $0400 ; Size of C1P video RAM (1 kB)
|
|
||||||
SCR_WIDTH = $18 ; Screen width
|
|
||||||
SCR_HEIGHT = $18 ; Screen height
|
|
||||||
|
|||||||
184
libsrc/osic1p/osiscreen.inc
Normal file
184
libsrc/osic1p/osiscreen.inc
Normal file
@ -0,0 +1,184 @@
|
|||||||
|
;
|
||||||
|
; Macro definitions for screen layout modules
|
||||||
|
;
|
||||||
|
|
||||||
|
.include "extzp.inc"
|
||||||
|
|
||||||
|
.linecont +
|
||||||
|
|
||||||
|
;
|
||||||
|
; Internal function for screensize()
|
||||||
|
;
|
||||||
|
.macro osi_screensize ScrWidth, ScrHeight
|
||||||
|
; Macro implementation of internal screensize
|
||||||
|
; function for given width and height in
|
||||||
|
; characters
|
||||||
|
|
||||||
|
.export screensize
|
||||||
|
|
||||||
|
.proc screensize
|
||||||
|
ldx #ScrWidth
|
||||||
|
ldy #ScrHeight
|
||||||
|
rts
|
||||||
|
.endproc
|
||||||
|
.endmacro
|
||||||
|
|
||||||
|
;
|
||||||
|
; void clrscr (void);
|
||||||
|
;
|
||||||
|
.macro osi_clrscr ScrBase, ScrRamSize
|
||||||
|
|
||||||
|
.export _clrscr
|
||||||
|
|
||||||
|
.proc _clrscr
|
||||||
|
lda #<ScrBase ; Fill whole video RAM with blanks by calling
|
||||||
|
ldx #>ScrBase ; memset appropriately
|
||||||
|
jsr pushax
|
||||||
|
|
||||||
|
lda #' '
|
||||||
|
ldx #$00
|
||||||
|
jsr pushax
|
||||||
|
|
||||||
|
lda #<ScrRamSize
|
||||||
|
ldx #>ScrRamSize
|
||||||
|
jsr _memset
|
||||||
|
|
||||||
|
lda #$00 ; Cursor in upper left corner
|
||||||
|
sta CURS_X
|
||||||
|
sta CURS_Y
|
||||||
|
|
||||||
|
jmp plot ; Set the cursor position
|
||||||
|
.endproc
|
||||||
|
|
||||||
|
.endmacro
|
||||||
|
|
||||||
|
;
|
||||||
|
; cputc/cputcxy for Challenger 1P
|
||||||
|
; Based on PET/CBM implementation
|
||||||
|
;
|
||||||
|
|
||||||
|
.macro osi_cputfuncs ScrBase, ScrFirstChar, ScrWidth, ScrHeight, \
|
||||||
|
ScrollDist, ScrLo, ScrHi
|
||||||
|
|
||||||
|
; Number of characters to move for scrolling
|
||||||
|
; by one line
|
||||||
|
ScrollLength = (ScrHeight - 1) * ScrollDist
|
||||||
|
|
||||||
|
;
|
||||||
|
; void cputcxy (unsigned char x, unsigned char y, char c);
|
||||||
|
; void cputc (char c);
|
||||||
|
;
|
||||||
|
.export _cputcxy, _cputc, cputdirect, putchar
|
||||||
|
.export newline, plot
|
||||||
|
|
||||||
|
_cputcxy:
|
||||||
|
pha ; Save C
|
||||||
|
jsr popa ; Get Y
|
||||||
|
jsr _gotoxy ; Set cursor, drop x
|
||||||
|
pla ; Restore C
|
||||||
|
|
||||||
|
; Plot a character - also used as internal function
|
||||||
|
|
||||||
|
_cputc: cmp #$0A ; CR?
|
||||||
|
bne L1
|
||||||
|
lda #0
|
||||||
|
sta CURS_X
|
||||||
|
beq plot ; Recalculate pointers
|
||||||
|
|
||||||
|
L1: cmp #$0D ; LF?
|
||||||
|
beq newline ; Recalculate pointers
|
||||||
|
|
||||||
|
cputdirect:
|
||||||
|
jsr putchar ; Write the character to the screen
|
||||||
|
|
||||||
|
; Advance cursor position, register Y contains horizontal position after
|
||||||
|
; putchar
|
||||||
|
|
||||||
|
cpy #(ScrWidth - 1) ; Check whether line is full
|
||||||
|
bne L3
|
||||||
|
jsr newline ; New line
|
||||||
|
ldy #$FF ; + cr
|
||||||
|
L3: iny
|
||||||
|
sty CURS_X
|
||||||
|
rts
|
||||||
|
|
||||||
|
newline:
|
||||||
|
inc CURS_Y
|
||||||
|
lda CURS_Y
|
||||||
|
cmp #ScrHeight ; Screen height
|
||||||
|
bne plot
|
||||||
|
dec CURS_Y ; Bottom of screen reached, scroll
|
||||||
|
|
||||||
|
; Scroll destination address
|
||||||
|
lda #<(ScrBase + ScrFirstChar)
|
||||||
|
ldx #>(ScrBase + ScrFirstChar)
|
||||||
|
jsr pushax
|
||||||
|
|
||||||
|
; Scroll source address
|
||||||
|
lda #<(ScrBase + ScrFirstChar + ScrollDist)
|
||||||
|
ldx #>(ScrBase + ScrFirstChar + ScrollDist)
|
||||||
|
jsr pushax
|
||||||
|
|
||||||
|
; Number of characters to move
|
||||||
|
lda #<ScrollLength
|
||||||
|
ldx #>ScrollLength
|
||||||
|
jsr _memmove
|
||||||
|
|
||||||
|
; Address of first character in last line
|
||||||
|
; of screen
|
||||||
|
lda #<(ScrBase + ScrFirstChar + ScrollLength)
|
||||||
|
sta ptr1
|
||||||
|
lda #>(ScrBase + ScrFirstChar + ScrollLength)
|
||||||
|
sta ptr1+1
|
||||||
|
|
||||||
|
ldy #ScrWidth ; Fill last line with blanks
|
||||||
|
lda #' '
|
||||||
|
clrln: sta (ptr1),y
|
||||||
|
dey
|
||||||
|
bpl clrln
|
||||||
|
|
||||||
|
plot: ldy CURS_Y
|
||||||
|
lda ScrLo,y
|
||||||
|
sta SCREEN_PTR
|
||||||
|
lda ScrHi,y
|
||||||
|
sta SCREEN_PTR+1
|
||||||
|
rts
|
||||||
|
|
||||||
|
; Write one character to the screen without doing anything else, return X
|
||||||
|
; position in register Y
|
||||||
|
|
||||||
|
putchar:
|
||||||
|
ldy CURS_X
|
||||||
|
sta (SCREEN_PTR),y ; Set char
|
||||||
|
rts
|
||||||
|
|
||||||
|
.endmacro
|
||||||
|
|
||||||
|
.macro osi_screen_funcs ScrBase, ScrRamSize, ScrFirstChar, \
|
||||||
|
ScrWidth, ScrHeight, ScrollDist
|
||||||
|
|
||||||
|
.import popa, _gotoxy
|
||||||
|
.import _memmove, _memset, pushax
|
||||||
|
.importzp ptr1
|
||||||
|
|
||||||
|
.rodata
|
||||||
|
|
||||||
|
; Screen address tables - offset to real screen
|
||||||
|
ScrTabLo:
|
||||||
|
.repeat ScrHeight, I
|
||||||
|
.byte <(ScrBase + ScrFirstChar + I * ScrollDist)
|
||||||
|
.endrep
|
||||||
|
|
||||||
|
ScrTabHi:
|
||||||
|
.repeat ScrHeight, I
|
||||||
|
.byte >(ScrBase + ScrFirstChar + I * ScrollDist)
|
||||||
|
.endrep
|
||||||
|
|
||||||
|
.code
|
||||||
|
|
||||||
|
osi_cputfuncs ScrBase, ScrFirstChar, ScrWidth, ScrHeight, \
|
||||||
|
ScrollDist, ScrTabLo, ScrTabHi
|
||||||
|
osi_screensize ScrWidth, ScrHeight
|
||||||
|
osi_clrscr ScrBase, ScrRamSize
|
||||||
|
|
||||||
|
.endmacro
|
||||||
16
libsrc/osic1p/screen-c1p-24x24.s
Normal file
16
libsrc/osic1p/screen-c1p-24x24.s
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
;
|
||||||
|
; Implementation of screen-layout related functions for Challenger 1P
|
||||||
|
;
|
||||||
|
|
||||||
|
.include "osiscreen.inc"
|
||||||
|
|
||||||
|
C1P_SCR_BASE := $D000 ; Base of C1P video RAM
|
||||||
|
C1P_VRAM_SIZE = $0400 ; Size of C1P video RAM (1 kB)
|
||||||
|
C1P_SCR_WIDTH = $18 ; Screen width
|
||||||
|
C1P_SCR_HEIGHT = $18 ; Screen height
|
||||||
|
C1P_SCR_FIRSTCHAR = $85 ; Offset of cursor position (0, 0) from base
|
||||||
|
; of video RAM
|
||||||
|
C1P_SCROLL_DIST = $20 ; Memory distance for scrolling by one line
|
||||||
|
|
||||||
|
osi_screen_funcs C1P_SCR_BASE, C1P_VRAM_SIZE, C1P_SCR_FIRSTCHAR, \
|
||||||
|
C1P_SCR_WIDTH, C1P_SCR_HEIGHT, C1P_SCROLL_DIST
|
||||||
Loading…
x
Reference in New Issue
Block a user