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-rw-r--r--qemu/roms/SLOF/slof/fs/fbuffer.fs264
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diff --git a/qemu/roms/SLOF/slof/fs/fbuffer.fs b/qemu/roms/SLOF/slof/fs/fbuffer.fs
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+\ *****************************************************************************
+\ * Copyright (c) 2004, 2008 IBM Corporation
+\ * All rights reserved.
+\ * This program and the accompanying materials
+\ * are made available under the terms of the BSD License
+\ * which accompanies this distribution, and is available at
+\ * http://www.opensource.org/licenses/bsd-license.php
+\ *
+\ * Contributors:
+\ * IBM Corporation - initial implementation
+\ ****************************************************************************/
+
+#include "terminal.fs"
+#include "display.fs"
+
+\ \\\\\\\\\\\\\\ Global Data
+
+0 VALUE frame-buffer-adr
+0 VALUE screen-height
+0 VALUE screen-width
+0 VALUE screen-depth
+0 VALUE window-top
+0 VALUE window-left
+
+0 VALUE .sc
+
+: screen-#rows ( -- rows )
+ .sc IF
+ screen-height char-height /
+ ELSE
+ true to .sc
+ s" screen-#rows" eval
+ false to .sc
+ THEN
+;
+
+: screen-#columns ( -- columns )
+ .sc IF
+ screen-width char-width /
+ ELSE
+ true to .sc
+ s" screen-#columns" eval
+ false to .sc
+ THEN
+;
+
+\ \\\\\\\\\\\\\\ Structure/Implementation Dependent Methods
+
+
+\ \\\\\\\\\\\\\\ Implementation Independent Methods (Depend on Previous)
+\ *
+\ *
+
+: fb8-background inverse? ;
+: fb8-foreground inverse? invert ;
+
+: fb8-lines2bytes ( #lines -- #bytes ) char-height * screen-width * screen-depth * ;
+: fb8-columns2bytes ( #columns -- #bytes ) char-width * screen-depth * ;
+: fb8-line2addr ( line# -- addr )
+ char-height * window-top + screen-width * screen-depth *
+ frame-buffer-adr + window-left screen-depth * +
+;
+
+: fb8-erase-block ( addr len ) fb8-background rfill ;
+
+
+0 VALUE .ab
+CREATE bitmap-buffer 400 4 * allot
+
+: active-bits ( -- new ) .ab dup 8 > IF 8 - to .ab 8 ELSE
+ char-width to .ab ?dup 0= IF recurse THEN
+ THEN ;
+
+: fb8-char2bitmap ( font-height font-addr -- bitmap-buffer )
+ bitmap-buffer >r
+ char-height rot 0> IF r> char-width 2dup fb8-erase-block + >r 1- THEN
+
+ r> -rot char-width to .ab
+ ( fb-addr font-addr font-height )
+ fontbytes * bounds ?DO
+ i c@ active-bits 0 ?DO
+ dup 80 and IF fb8-foreground ELSE fb8-background THEN
+ ( fb-addr fbyte colr ) 2 pick ! 1 lshift
+ swap screen-depth + swap
+ LOOP drop
+ LOOP drop
+ bitmap-buffer
+;
+
+\ \\\\\\\\\\\\\\ Exported Interface:
+\ *
+\ * IEEE 1275: Frame buffer support routines
+\ *
+
+: fb8-draw-logo ( line# addr width height -- ) ." fb8-draw-logo ( " .s ." )" cr
+ 2drop 2drop
+;
+
+: fb8-toggle-cursor ( -- )
+ line# fb8-line2addr column# fb8-columns2bytes +
+ char-height 0 ?DO
+ char-width screen-depth * 0 ?DO dup dup rb@ -1 xor swap rb! 1+ LOOP
+ screen-width screen-depth * + char-width screen-depth * -
+ LOOP drop
+;
+
+: fb8-draw-character ( char -- )
+ >r default-font over + r@ -rot between IF
+ 2swap 3drop r> >font fb8-char2bitmap ( bitmap-buf )
+ line# fb8-line2addr column# fb8-columns2bytes + ( bitmap-buf fb-addr )
+ char-height 0 ?DO
+ 2dup char-width screen-depth * mrmove
+ screen-width screen-depth * + >r char-width screen-depth * + r>
+ LOOP 2drop
+ ELSE 2drop r> 3drop THEN
+;
+
+: fb8-insert-lines ( n -- )
+ fb8-lines2bytes >r line# fb8-line2addr dup dup r@ +
+ #lines line# - fb8-lines2bytes r@ - rmove
+ r> fb8-erase-block
+;
+
+: fb8-delete-lines ( n -- )
+ fb8-lines2bytes >r line# fb8-line2addr dup dup r@ + swap
+ #lines fb8-lines2bytes r@ - dup >r rmove
+ r> + r> fb8-erase-block
+;
+
+: fb8-insert-characters ( n -- )
+ line# fb8-line2addr column# fb8-columns2bytes + >r
+ #columns column# - 2dup >= IF
+ nip dup 0> IF fb8-columns2bytes r> ELSE r> 2drop EXIT THEN
+ ELSE
+ fb8-columns2bytes swap fb8-columns2bytes tuck -
+ over r@ tuck + rot char-height 0 ?DO
+ 3dup rmove
+ -rot screen-width screen-depth * tuck + -rot + swap rot
+ LOOP
+ 3drop r>
+ THEN
+ char-height 0 ?DO
+ dup 2 pick fb8-erase-block screen-width screen-depth * +
+ LOOP
+ 2drop
+;
+
+: fb8-delete-characters ( n -- )
+ line# fb8-line2addr column# fb8-columns2bytes + >r
+ #columns column# - 2dup >= IF
+ nip dup 0> IF fb8-columns2bytes r> ELSE r> 2drop EXIT THEN
+ ELSE
+ fb8-columns2bytes swap fb8-columns2bytes tuck -
+ over r@ + 2dup + r> swap >r rot char-height 0 ?DO
+ 3dup rmove
+ -rot screen-width screen-depth * tuck + -rot + swap rot
+ LOOP
+ 3drop r> over -
+ THEN
+ char-height 0 ?DO
+ dup 2 pick fb8-erase-block screen-width screen-depth * +
+ LOOP
+ 2drop
+;
+
+: fb8-reset-screen ( -- ) ( Left as no-op by design ) ;
+
+: fb8-erase-screen ( -- )
+ frame-buffer-adr screen-height screen-width * screen-depth * fb8-erase-block
+;
+
+: fb8-invert-screen ( -- )
+ frame-buffer-adr screen-height screen-width * screen-depth * 2dup /x / 0 ?DO
+ dup rx@ -1 xor over rx! xa1+
+ LOOP 3drop
+;
+
+: fb8-blink-screen ( -- ) fb8-invert-screen fb8-invert-screen ;
+
+: fb8-install ( width height #columns #lines -- )
+ 1 to screen-depth
+ 2swap to screen-height to screen-width
+ screen-#rows min to #lines
+ screen-#columns min to #columns
+ screen-height char-height #lines * - 2/ to window-top
+ screen-width char-width #columns * - 2/ to window-left
+ ['] fb8-toggle-cursor to toggle-cursor
+ ['] fb8-draw-character to draw-character
+ ['] fb8-insert-lines to insert-lines
+ ['] fb8-delete-lines to delete-lines
+ ['] fb8-insert-characters to insert-characters
+ ['] fb8-delete-characters to delete-characters
+ ['] fb8-erase-screen to erase-screen
+ ['] fb8-blink-screen to blink-screen
+ ['] fb8-invert-screen to invert-screen
+ ['] fb8-reset-screen to reset-screen
+ ['] fb8-draw-logo to draw-logo
+;
+
+: fb-install ( width height #columns #lines depth -- )
+ >r
+ fb8-install
+ r> to screen-depth
+;
+
+
+\ Install display related FCODE evaluator tokens
+: fb8-set-tokens ( -- )
+ ['] is-install 0 11C set-token
+ ['] is-remove 0 11D set-token
+ ['] is-selftest 0 11E set-token
+
+ ['] #lines 0 150 set-token
+ ['] #columns 0 151 set-token
+ ['] line# 0 152 set-token
+ ['] column# 0 153 set-token
+ ['] inverse? 0 154 set-token
+ ['] inverse-screen? 0 155 set-token
+ ['] draw-character 0 157 set-token
+ ['] reset-screen 0 158 set-token
+ ['] toggle-cursor 0 159 set-token
+ ['] erase-screen 0 15A set-token
+ ['] blink-screen 0 15B set-token
+ ['] invert-screen 0 15C set-token
+ ['] insert-characters 0 15D set-token
+ ['] delete-characters 0 15E set-token
+ ['] insert-lines 0 15F set-token
+ ['] delete-lines 0 160 set-token
+ ['] draw-logo 0 161 set-token
+ ['] frame-buffer-adr 0 162 set-token
+ ['] screen-height 0 163 set-token
+ ['] screen-width 0 164 set-token
+ ['] window-top 0 165 set-token
+ ['] window-left 0 166 set-token
+ \ ['] foreground-color 0 168 set-token \ 16-color extension - n/a
+ \ ['] background-color 0 169 set-token \ 16-color extension - n/a
+ ['] default-font 0 16A set-token
+ ['] set-font 0 16B set-token
+ ['] char-height 0 16C set-token
+ ['] char-width 0 16D set-token
+ ['] >font 0 16E set-token
+ ['] fontbytes 0 16F set-token
+
+ ['] fb8-draw-character 0 180 set-token
+ ['] fb8-reset-screen 0 181 set-token
+ ['] fb8-toggle-cursor 0 182 set-token
+ ['] fb8-erase-screen 0 183 set-token
+ ['] fb8-blink-screen 0 184 set-token
+ ['] fb8-invert-screen 0 185 set-token
+ ['] fb8-insert-characters 0 186 set-token
+ ['] fb8-delete-characters 0 187 set-token
+ ['] fb8-insert-lines 0 188 set-token
+ ['] fb8-delete-lines 0 189 set-token
+ ['] fb8-draw-logo 0 18A set-token
+ ['] fb8-install 0 18B set-token
+;
+fb8-set-tokens
+
+
+\ \\\\\\\\\\\\ Debug Stuff \\\\\\\\\\\\\\\\
+
+: fb8-dump-bitmap cr char-height 0 ?do char-width 0 ?do dup c@ if ." @" else ." ." then 1+ loop cr loop drop ;
+
+: fb8-dump-char >font -b swap fb8-char2bitmap fb8-dump-bitmap ;