commit 4edb709c900888058a70ca8b439a4ced68b41f2f
parent fd42537cf7a8820f24e6be93bf4af64922da4503
Author: Andrew Alderwick <andrew@alderwick.co.uk>
Date:   Fri, 23 Apr 2021 00:40:54 +0100
Auto-ported Neralie to new assembler
Diffstat:
2 files changed, 301 insertions(+), 294 deletions(-)
diff --git a/attic/software/neralie.usm b/attic/software/neralie.usm
@@ -1,294 +0,0 @@
-(
-	app/neralie : clock with arvelie date
-
-	TODO
-		- Implement higher resolution time rather than counting fps
-)
-
-;fps { current 1 next 1 second 1 }
-;number { started 1 count 1 }
-;lines { x1 2 x2 2 y1 2 y2 2 addr 2 }
-;neralie { n0123 2 n4 1 n5 1 n6 1 n7 1 n8 1 n9 1 color 1 x 2 y 2 w 2 h 2 }
-;mul { ahi 1 alo 1 bhi 1 blo 1 }
-
-|0100 ;System { vector 2 pad 6 r 2 g 2 b 2 }
-|0110 ;Console { vector 2 pad 6 char 1 byte 1 short 2 string 2 }
-|0120 ;Screen { vector 2 width 2 height 2 pad 2 x 2 y 2 addr 2 color 1 }
-|01a0 ;DateTime { year 2 month 1 day 1 hour 1 minute 1 second 1 dotw 1 doty 2 isdst 1 refresh 1 }
-
-( program )
-
-|0200
-
-	( theme ) #03fd =System.r #0ef3 =System.g #0bf2 =System.b
-	( vectors ) ,on-screen =Screen.vector
-	#01 =fps.current
-
-	#000c
-	DUP2 =lines.x1
-	DUP2 =lines.y1
-	DUP2 ~Screen.width SWP2 SUB2 #0001 SUB2 =lines.x2
-	     ~Screen.height SWP2 SUB2 =lines.y2
-
-	#02 =neralie.color
-	~lines.x1 ~lines.x2
-	OVR2 OVR2 ~lines.y1 ,h JSR2
-	          ~lines.y2 ,h JSR2
-	~lines.y1 #0001 SUB2 ~lines.y2 #0001 ADD2
-	OVR2 OVR2 ~lines.x1 ,v JSR2
-	          ~lines.x2 ,v JSR2
-
-@on-screen
-	,update-fps JSR2
-	#00 =neralie.color
-	,neralie-lines JSR2
-	,neralie-calc JSR2
-	#02 =neralie.color
-	,arvelie-text JSR2
-	,neralie-text JSR2
-	,neralie-lines JSR2
-	BRK
-
-	#22 =Screen.color
-	#0000 #00 ~number.count DUP2 ,h JSR2
-	~number.count #01 ADD =number.count
-
-@neralie-calc ( -- )
-	( add up fractions of a pulse, store tenths in n6 )
-	#0120 #00 ~DateTime.hour MUL2
-	#00c0 #00 ~DateTime.minute MUL2 ADD2
-	#00f8 #00 ~DateTime.second MUL2 ADD2
-	#0271 #00 ~fps.next MUL2 #00 ~fps.current DIV2 #0008 MUL2 ADD2
-	#01b0 ,modf JSR2 SWP2 #0017 MUL2 #03e8 DIV2 =neralie.n6 POP
-
-	( add up units and tens of pulses, store in n5 and n4 )
-	#0042 #00 ~DateTime.hour MUL2 ADD2
-	#005e #00 ~DateTime.minute MUL2 ADD2
-	#000b #00 ~DateTime.second MUL2 ADD2
-	#000a ,modf JSR2 SWP2 =neralie.n5 POP
-	#000a ,modf JSR2 SWP2 =neralie.n4 POP
-
-	( add up hundreds of pulses + 10 x beats, store in n0123 )
-	#01a0 #00 ~DateTime.hour MUL2 ADD2
-	#0006 #00 ~DateTime.minute MUL2 ADD2 =neralie.n0123
-
-	JMP2r
-
-@arvelie-text ( -- )
-	~Screen.width #0002 DIV2 #0034 SUB2 =Screen.x
-	~Screen.height #0008 SUB2 =Screen.y
-	~DateTime.year #07d6 SUB2
-	#000a ,modf JSR2 ,digit JSR2
-	                 ,digit JSR2
-	~DateTime.doty
-	#000e ,modf JSR2 ^letter JSR
-	#000a ,modf JSR2 ^digit JSR
-	                 ^digit JSR
-	JMP2r
-
-@neralie-text ( -- )
-	~Screen.width #0002 DIV2 #0004 SUB2 =Screen.x
-	~neralie.n0123
-	#03e8 ,modf JSR2 ^digit JSR
-	#0064 ,modf JSR2 ^digit JSR
-	#000a ,modf JSR2 ^digit JSR
-	           #000b ^digit JSR ( the colon )
-	                 ^digit JSR
-	#00 ~neralie.n4  ^digit JSR
-	#00 ~neralie.n5  ^digit JSR
-	JMP2r
-
-@letter ( index* -- )
-	#0008 MUL2 ,font-letters ADD2 =Screen.addr
-	^digit-middle JMP
-
-@digit ( index* -- )
-	#0008 MUL2 ,font-numbers ADD2 =Screen.addr
-	$middle
-	~neralie.color #20 ADD =Screen.color
-	~Screen.x #0008 ADD2 =Screen.x
-	JMP2r
-
-@neralie-lines ( -- )
-	~lines.x2 ~lines.x1 DUP2 =neralie.x SUB2 =neralie.w
-	~lines.y2 ~lines.y1 DUP2 =neralie.y SUB2 =neralie.h
-
-	,neralie.n4 SWP POP ~neralie.n0123
-	DUP2 ,$h JSR2
-	,$next JSR2 #0001 =Screen.x ~neralie.y #0003 SUB2 =Screen.y ^digit JSR
-	DUP2 ,$v JSR2
-	#04 ,v-spacing POK2
-	~lines.y1 #0003 SUB2 ~neralie.y ~neralie.x ,v JSR2
-	#01 ,v-spacing POK2
-	^$next JSR #0001 =Screen.y ~neralie.x #0003 SUB2 =Screen.x ,digit JSR2
-	DUP2 ^$h JSR
-	^$next JSR ~Screen.width #0009 SUB2 =Screen.x ~neralie.y #0003 SUB2 =Screen.y ,digit JSR2
-	DUP2 ^$v JSR
-	^$next JSR POP2
-	DUP2 ^$h JSR
-	^$next JSR POP2
-	DUP2 ^$v JSR
-	POP2 POP
-	JMP2r
-
-	$next ( digit-addr number* -- next-digit-addr next-number* prev-digit* )
-	#03e8 ,modf JSR2 STH2 #000a MUL2
-	ROT DUP STH #01 ADD ROT ROT
-	#00 STHr PEK ADD2
-	STH2r
-	JMP2r
-
-	$h ( number* -- )
-	^scale JSR
-	~neralie.h ,mul2hi JSR2
-	DUP2 #0000 NEQ2 #02 JNZ POP2 JMP2r
-	DUP2 ~neralie.y ADD2 =neralie.y
-	~neralie.h SWP2 SUB2 =neralie.h
-	~neralie.x DUP2 ~neralie.w ADD2 ~neralie.y ^h JMP
-
-	$v ( number* -- )
-	^scale JSR
-	~neralie.w ,mul2hi JSR2
-	DUP2 #0000 NEQ2 #02 JNZ POP2 JMP2r
-	DUP2 ~neralie.x ADD2 =neralie.x
-	~neralie.w SWP2 SUB2 =neralie.w
-	~neralie.y DUP2 ~neralie.h ADD2 ~neralie.x ^v JMP
-
-@scale ( 0..10000* -- 0..65535* )
-	DUP2 #8db8 ,mul2hi JSR2
-	SWP2 #0006 MUL2 ADD2
-	JMP2r
-
-@h ( x1* x2* y* -- )
-	=Screen.y
-	,Screen.x =lines.addr
-	^v-draw-line JMP
-
-@v ( y1* y2* x* -- )
-	=Screen.x
-	,Screen.y =lines.addr
-
-	$draw-line ( v1* v2* -- )
-	OVR2 OVR2 LTH2 #01 JNZ SWP2
-	STH2
-
-	$loop
-	LIT2 [ 00 ] $spacing [ 01 ] ADD2
-	DUP2 DUP2r STH2r LTH2 ^$keep-going JNZ
-	POP2 POP2r
-	JMP2r
-
-	$keep-going
-	DUP2 ~lines.addr STR2
-	~neralie.color =Screen.color
-	^$loop JMP
-
-@update-fps ( -- )
-	#00 =DateTime.refresh
-	~fps.next #01 ADD =fps.next
-	~DateTime.second ~fps.second NEQ JMP JMP2r
-	~DateTime.second =fps.second
-	~fps.next =fps.current
-
-	( ~fps.next ^print-byte-decimal JSR
-	,strings-fps ^print-string JSR )
-
-	#00 =fps.next
-	JMP2r
-
-@print-string ( string* -- )
-	DUP2 PEK2 DUP ^$not-end JNZ
-	POP POP2 JMP2r
-
-	$not-end
-	=Console.char
-	#0001 ADD2 ^print-string JMP
-
-@print-byte-decimal ( byte -- )
-	#00 =number.started
-	#00 SWP
-	^print-short-decimal-byte-start JMP
-
-@print-short-decimal ( short* -- )
-	#00 =number.started
-	#2710 ^modf JSR ^$digit JSR
-	#03e8 ^modf JSR ^$digit JSR
-	$byte-start
-	#0064 ^modf JSR ^$digit JSR
-	#000a ^modf JSR ^$digit JSR
-	                ^$digit JSR
-	~number.started ^$end JNZ
-	#30 =Console.char
-	$end JMP2r
-
-	$digit
-	SWP POP
-	DUP ~number.started ORA #02 JNZ
-	POP JMP2r
-	#30 ADD =Console.char
-	#01 =number.started
-	JMP2r
-
-@modf ( dividend* divisor* -- remainder* quotient* )
-	OVR2 OVR2 DIV2 DUP2 STH2 MUL2 SUB2 STH2r JMP2r
-
-@mul2hi ( a* b* -- product-top-16-bits* )
-	(
-		Multiplying two 16-bit numbers yields a 32-bit number.
-		MUL2 returns the lowest 16 bits, we want the highest.
-
-		We split each short into hi and lo bytes, then sum
-		the following multiplications:
-
-		31..24 23..16 15..08 07..00
-		{ ahi * bhi }
-		       { alo * bhi }
-		       { ahi * blo }
-		              { alo * blo }
-
-		Bits 07..00 can be ignored, but each sum in bits 23..16
-		can end up overflowing into bit 24.
-	)
-	,mul.bhi STR2 ,mul.ahi STR2
-	#00
-		#00
-			#00 ~mul.alo #00 ~mul.blo MUL2
-		POP
-		#00 ~mul.ahi #00 ~mul.blo MUL2 ^$adc JSR
-		#00 ~mul.alo #00 ~mul.bhi MUL2 ^$adc JSR
-	POP
-	#00 ~mul.ahi #00 ~mul.bhi MUL2 ADD2
-	JMP2r
-
-	$adc ( 31..24 a* b* -- 31..24 sum* )
-	OVR2 ADD2 SWP2 OVR2
-	GTH2 ^$carry JNZ
-	JMP2r
-	$carry
-	ROT #01 ADD ROT ROT
-	JMP2r
-
-@strings
-	$fps [ 20 fps 0a 00 ]
-
-@font-numbers
-[
-	7cc6 ced6 e6c6 7c00 1838 1818 1818 7e00 3c66 063c 6066 7e00
-	3c66 061c 0666 3c00 1c3c 6ccc fe0c 1e00 7e62 607c 0666 3c00
-	3c66 607c 6666 3c00 7e66 060c 1818 1800 3c66 663c 6666 3c00
-	3c66 663e 0666 3c00 7cc6 ced6 e6c6 7c00 0018 1800 1818 0000
-]
-
-@font-letters
-[
-	183c 6666 7e66 6600 fc66 667c 6666 fc00 3c66 c0c0 c066 3c00
-	f86c 6666 666c f800 fe62 6878 6862 fe00 fe62 6878 6860 f000
-	3c66 c0c0 ce66 3e00 6666 667e 6666 6600 7e18 1818 1818 7e00
-	1e0c 0c0c cccc 7800 e666 6c78 6c66 e600 f060 6060 6266 fe00
-	c6ee fefe d6c6 c600 c6e6 f6de cec6 c600 386c c6c6 c66c 3800
-	fc66 667c 6060 f000 386c c6c6 dacc 7600 fc66 667c 6c66 e600
-	3c66 603c 0666 3c00 7e5a 1818 1818 3c00 6666 6666 6666 3c00
-	6666 6666 663c 1800 c6c6 c6d6 feee c600 c66c 3838 6cc6 c600
-	6666 663c 1818 3c00 fec6 8c18 3266 fe00 0018 187e 1818 0000
-]
-
diff --git a/projects/software/neralie.usm b/projects/software/neralie.usm
@@ -0,0 +1,301 @@
+(
+	app/neralie : clock with arvelie date
+
+	TODO
+		- Implement higher resolution time rather than counting fps
+)
+
+( devices )
+
+|00 @System [ &vector $2 &pad $6 &r $2 &g $2 &b $2 ]
+|10 @Console [ &vector $2 &pad $6 &char $1 &byte $1 &short $2 &string $2 ]
+|20 @Screen [ &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &color $1 ]
+|a0 @DateTime [ &year $2 &month $1 &day $1 &hour $1 &minute $1 &second $1 &dotw $1 &doty $2 &isdst $1 &refresh $1 ]
+
+( variables )
+
+|0000
+
+@fps [ ¤t $1 &next $1 &second $1 ]
+@number [ &started $1 &count $1 ]
+@lines [ &x1 $2 &x2 $2 &y1 $2 &y2 $2 &addr $1 ]
+@neralie [ &n0123 $2 &n4 $1 &n5 $1 &n6 $1 &n7 $1 &n8 $1 &n9 $1 &color $1 &x $2 &y $2 &w $2 &h $2 ]
+@mul [ &ahi $1 &alo $1 &bhi $1 &blo $1 ]
+
+( program )
+
+|0100
+
+	( theme )  #03fd .System/r DEO2 #0ef3 .System/g DEO2 #0bf2 .System/b DEO2
+	( vectors )  ;on-screen .Screen/vector DEO2
+	#01 .fps/current POK
+
+	#000c
+	DUP2 .lines/x1 POK2
+	DUP2 .lines/y1 POK2
+	DUP2 .Screen/width DEI2 SWP2 SUB2 #0001 SUB2 .lines/x2 POK2
+	     .Screen/height DEI2 SWP2 SUB2 .lines/y2 POK2
+
+	#02 .neralie/color POK
+	.lines/x1 PEK2 .lines/x2 PEK2
+	OVR2 OVR2 .lines/y1 PEK2 ;h JSR2
+	          .lines/y2 PEK2 ;h JSR2
+	.lines/y1 PEK2 #0001 SUB2 .lines/y2 PEK2 #0001 ADD2
+	OVR2 OVR2 .lines/x1 PEK2 ;v JSR2
+	          .lines/x2 PEK2 ;v JSR2
+
+@on-screen
+	;update-fps JSR2
+	#00 .neralie/color POK
+	;neralie-lines JSR2
+	;neralie-calc JSR2
+	#02 .neralie/color POK
+	;arvelie-text JSR2
+	;neralie-text JSR2
+	;neralie-lines JSR2
+	BRK
+
+	#22 .Screen/color DEO
+	#0000 #00 .number/count PEK DUP2 ;h JSR2
+	.number/count PEK #01 ADD .number/count POK
+
+@neralie-calc ( -- )
+	( add up fractions of a pulse, store tenths in n6 )
+	#0120 #00 .DateTime/hour DEI MUL2
+	#00c0 #00 .DateTime/minute DEI MUL2 ADD2
+	#00f8 #00 .DateTime/second DEI MUL2 ADD2
+	#0271 #00 .fps/next PEK MUL2 #00 .fps/current PEK DIV2 #0008 MUL2 ADD2
+	#01b0 ;modf JSR2 SWP2 #0017 MUL2 #03e8 DIV2 .neralie/n6 POK POP
+
+	( add up units and tens of pulses, store in n5 and n4 )
+	#0042 #00 .DateTime/hour DEI MUL2 ADD2
+	#005e #00 .DateTime/minute DEI MUL2 ADD2
+	#000b #00 .DateTime/second DEI MUL2 ADD2
+	#000a ;modf JSR2 SWP2 .neralie/n5 POK POP
+	#000a ;modf JSR2 SWP2 .neralie/n4 POK POP
+
+	( add up hundreds of pulses + 10 x beats, store in n0123 )
+	#01a0 #00 .DateTime/hour DEI MUL2 ADD2
+	#0006 #00 .DateTime/minute DEI MUL2 ADD2 .neralie/n0123 POK2
+
+	JMP2r
+
+@arvelie-text ( -- )
+	.Screen/width DEI2 #0002 DIV2 #0034 SUB2 .Screen/x DEO2
+	.Screen/height DEI2 #0008 SUB2 .Screen/y DEO2
+	.DateTime/year DEI2 #07d6 SUB2
+	#000a ;modf JSR2 ;digit JSR2
+	                 ;digit JSR2
+	.DateTime/doty DEI2
+	#000e ;modf JSR2 ,letter JSR
+	#000a ;modf JSR2 ,digit JSR
+	                 ,digit JSR
+	JMP2r
+
+@neralie-text ( -- )
+	.Screen/width DEI2 #0002 DIV2 #0004 SUB2 .Screen/x DEO2
+	.neralie/n0123 PEK2
+	#03e8 ;modf JSR2 ,digit JSR
+	#0064 ;modf JSR2 ,digit JSR
+	#000a ;modf JSR2 ,digit JSR
+	           #000b ,digit JSR ( the colon )
+	                 ,digit JSR
+	#00 .neralie/n4 PEK  ,digit JSR
+	#00 .neralie/n5 PEK  ,digit JSR
+	JMP2r
+
+@letter ( index* -- )
+	#0008 MUL2 ;font-letters ADD2 .Screen/addr DEO2
+	,digit/middle JMP
+
+@digit ( index* -- )
+	#0008 MUL2 ;font-numbers ADD2 .Screen/addr DEO2
+	&middle
+	.neralie/color PEK #20 ADD .Screen/color DEO
+	.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
+	JMP2r
+
+@neralie-lines ( -- )
+	.lines/x2 PEK2 .lines/x1 PEK2 DUP2 .neralie/x POK2 SUB2 .neralie/w POK2
+	.lines/y2 PEK2 .lines/y1 PEK2 DUP2 .neralie/y POK2 SUB2 .neralie/h POK2
+
+	;neralie/n4 SWP POP .neralie/n0123 PEK2
+	DUP2 ;&h JSR2
+	;&next JSR2 #0001 .Screen/x DEO2 .neralie/y PEK2 #0003 SUB2 .Screen/y DEO2 ,digit JSR
+	DUP2 ;&v JSR2
+	#04 ;v/spacing PUT
+	.lines/y1 PEK2 #0003 SUB2 .neralie/y PEK2 .neralie/x PEK2 ;v JSR2
+	#01 ;v/spacing PUT
+	,&next JSR #0001 .Screen/y DEO2 .neralie/x PEK2 #0003 SUB2 .Screen/x DEO2 ;digit JSR2
+	DUP2 ,&h JSR
+	,&next JSR .Screen/width DEI2 #0009 SUB2 .Screen/x DEO2 .neralie/y PEK2 #0003 SUB2 .Screen/y DEO2 ;digit JSR2
+	DUP2 ,&v JSR
+	,&next JSR POP2
+	DUP2 ,&h JSR
+	,&next JSR POP2
+	DUP2 ,&v JSR
+	POP2 POP
+	JMP2r
+
+	&next ( digit-addr number* -- next-digit-addr next-number* prev-digit* )
+	#03e8 ;modf JSR2 STH2 #000a MUL2
+	ROT DUP STH #01 ADD ROT ROT
+	#00 STHr PEK ADD2
+	STH2r
+	JMP2r
+
+	&h ( number* -- )
+	,scale JSR
+	.neralie/h PEK2 ;mul2hi JSR2
+	DUP2 #0000 NEQ2 #02 JNZ POP2 JMP2r
+	DUP2 .neralie/y PEK2 ADD2 .neralie/y POK2
+	.neralie/h PEK2 SWP2 SUB2 .neralie/h POK2
+	.neralie/x PEK2 DUP2 .neralie/w PEK2 ADD2 .neralie/y PEK2 ,h JMP
+
+	&v ( number* -- )
+	,scale JSR
+	.neralie/w PEK2 ;mul2hi JSR2
+	DUP2 #0000 NEQ2 #02 JNZ POP2 JMP2r
+	DUP2 .neralie/x PEK2 ADD2 .neralie/x POK2
+	.neralie/w PEK2 SWP2 SUB2 .neralie/w POK2
+	.neralie/y PEK2 DUP2 .neralie/h PEK2 ADD2 .neralie/x PEK2 ,v JMP
+
+@scale ( 0..10000* -- 0..65535* )
+	DUP2 #8db8 ;mul2hi JSR2
+	SWP2 #0006 MUL2 ADD2
+	JMP2r
+
+@h ( x1* x2* y* -- )
+	.Screen/y DEO2
+	.Screen/x .lines/addr POK
+	,v/draw-line JMP
+
+@v ( y1* y2* x* -- )
+	.Screen/x DEO2
+	.Screen/y .lines/addr POK
+
+	&draw-line ( v1* v2* -- )
+	OVR2 OVR2 LTH2 #01 JNZ SWP2
+	STH2
+
+	&loop
+	LIT2 [ 00 ] &spacing [ 01 ] ADD2
+	DUP2 DUP2r STH2r LTH2 ,&keep-going JNZ
+	POP2 POP2r
+	JMP2r
+
+	&keep-going
+	DUP2 .lines/addr PEK DEO2
+	.neralie/color PEK .Screen/color DEO
+	,&loop JMP
+
+@update-fps ( -- )
+	#00 .DateTime/refresh DEO
+	.fps/next PEK #01 ADD .fps/next POK
+	.DateTime/second DEI .fps/second PEK NEQ JMP JMP2r
+	.DateTime/second DEI .fps/second POK
+	.fps/next PEK .fps/current POK
+
+	( ~fps.next ^print-byte-decimal JSR
+	,strings-fps ^print-string JSR )
+
+	#00 .fps/next POK
+	JMP2r
+
+@print-string ( string* -- )
+	DUP2 GET DUP ,¬-end JNZ
+	POP POP2 JMP2r
+
+	¬-end
+	.Console/char DEO
+	#0001 ADD2 ,print-string JMP
+
+@print-byte-decimal ( byte -- )
+	#00 .number/started POK
+	#00 SWP
+	,print-short-decimal/byte-start JMP
+
+@print-short-decimal ( short* -- )
+	#00 .number/started POK
+	#2710 ,modf JSR ,&digit JSR
+	#03e8 ,modf JSR ,&digit JSR
+	&byte-start
+	#0064 ,modf JSR ,&digit JSR
+	#000a ,modf JSR ,&digit JSR
+	                ,&digit JSR
+	.number/started PEK ,&end JNZ
+	#30 .Console/char DEO
+	&end JMP2r
+
+	&digit
+	SWP POP
+	DUP .number/started PEK ORA #02 JNZ
+	POP JMP2r
+	#30 ADD .Console/char DEO
+	#01 .number/started POK
+	JMP2r
+
+@modf ( dividend* divisor* -- remainder* quotient* )
+	OVR2 OVR2 DIV2 DUP2 STH2 MUL2 SUB2 STH2r JMP2r
+
+@mul2hi ( a* b* -- product-top-16-bits* )
+	(
+		Multiplying two 16-bit numbers yields a 32-bit number.
+		MUL2 returns the lowest 16 bits, we want the highest.
+
+		We split each short into hi and lo bytes, then sum
+		the following multiplications:
+
+		31..24 23..16 15..08 07..00
+		{ ahi * bhi }
+		       { alo * bhi }
+		       { ahi * blo }
+		              { alo * blo }
+
+		Bits 07..00 can be ignored, but each sum in bits 23..16
+		can end up overflowing into bit 24.
+	)
+	
+	;mul/bhi PUT2 ;mul/ahi PUT2
+	#00
+		#00
+			#00 .mul/alo PEK #00 .mul/blo PEK MUL2
+		POP
+		#00 .mul/ahi PEK #00 .mul/blo PEK MUL2 ,&adc JSR
+		#00 .mul/alo PEK #00 .mul/bhi PEK MUL2 ,&adc JSR
+	POP
+	#00 .mul/ahi PEK #00 .mul/bhi PEK MUL2 ADD2
+	JMP2r
+
+	&adc ( 31..24 a* b* -- 31..24 sum* )
+	OVR2 ADD2 SWP2 OVR2
+	GTH2 ,&carry JNZ
+	JMP2r
+	&carry
+	ROT #01 ADD ROT ROT
+	JMP2r
+
+@strings
+	&fps [ 20 "fps 0a 00 ]
+
+@font-numbers
+[
+	7cc6 ced6 e6c6 7c00 1838 1818 1818 7e00 3c66 063c 6066 7e00
+	3c66 061c 0666 3c00 1c3c 6ccc fe0c 1e00 7e62 607c 0666 3c00
+	3c66 607c 6666 3c00 7e66 060c 1818 1800 3c66 663c 6666 3c00
+	3c66 663e 0666 3c00 7cc6 ced6 e6c6 7c00 0018 1800 1818 0000
+]
+
+@font-letters
+[
+	183c 6666 7e66 6600 fc66 667c 6666 fc00 3c66 c0c0 c066 3c00
+	f86c 6666 666c f800 fe62 6878 6862 fe00 fe62 6878 6860 f000
+	3c66 c0c0 ce66 3e00 6666 667e 6666 6600 7e18 1818 1818 7e00
+	1e0c 0c0c cccc 7800 e666 6c78 6c66 e600 f060 6060 6266 fe00
+	c6ee fefe d6c6 c600 c6e6 f6de cec6 c600 386c c6c6 c66c 3800
+	fc66 667c 6060 f000 386c c6c6 dacc 7600 fc66 667c 6c66 e600
+	3c66 603c 0666 3c00 7e5a 1818 1818 3c00 6666 6666 6666 3c00
+	6666 6666 663c 1800 c6c6 c6d6 feee c600 c66c 3838 6cc6 c600
+	6666 663c 1818 3c00 fec6 8c18 3266 fe00 0018 187e 1818 0000
+]
+