Omega-TI Posted July 1, 2015 Share Posted July 1, 2015 I'm not at the crawling stage yet (cartridge not due to arrive for at few days), so I'm totally ignorant and without a clue, so in preparation, where does one go to find fbForth programs to download, run and learn from? Quote Link to comment Share on other sites More sharing options...
Opry99er Posted July 1, 2015 Share Posted July 1, 2015 Lee has some excellent example code in the manual. If I am not mistaken, a spiral-hat demo is in the works too. Have you tried playing Dark Star for TurboForth in Classic99 yet? It is masterfully done and the "syntax" is similar to fbForth. I put syntax in quotes because Forth has no real syntax... Just words... Built-in and user-defined. Very neat language, man... Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 1, 2015 Author Share Posted July 1, 2015 Nope, I've never heard of Dark Star, but if you point me in the right direction... Quote Link to comment Share on other sites More sharing options...
Shift838 Posted July 1, 2015 Share Posted July 1, 2015 (edited) Nope, I've never heard of Dark Star, but if you point me in the right direction... You can download Darstar from HERE Also there are TurboForth docs and tutorials at turboforth.net Edited July 1, 2015 by Cschneider 1 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 1, 2015 Author Share Posted July 1, 2015 Oh well, I cannot mess around anymore today. I gotta hit the rack early, got a long day tomorrow... 1 Quote Link to comment Share on other sites More sharing options...
Opry99er Posted July 1, 2015 Share Posted July 1, 2015 Nope, I've never heard of Dark Star, but if you point me in the right direction... Follow the links in SHIFT838 issue 5. There is also a description of the game in that issue. 1 Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 1, 2015 Share Posted July 1, 2015 I'm not at the crawling stage yet (cartridge not due to arrive for at few days), so I'm totally ignorant and without a clue, so in preparation, where does one go to find fbForth programs to download, run and learn from? I have been looking around for old TI Forth programs that should work with little modification. I found 9 Forth disks in the Boston Computer Society library. Three of them will only work with TI Forth, one of which is a pretty cool TI demo. A handful of the programs on the other disks only make sense for TI Forth; but, there are quite a few that should work. One I tried, works with no modification at all. It is a text adaptation of Breakout by Clint Pulley, called BreakForth: ( BREAKFORTH INTRODUCTION) : BFSTART ; CLS 14 1 GOTOXY ." BREAKFORTH" 14 2 GOTOXY ." **********" CR CR ." Adapted to TI FORTH by Clint Pulley" CR CR ." This game demonstrates the the speed of" CR ." TI FORTH. It is written for text mode" CR ." and uses only the RESIDENT and SYNONYMS" CR ." vocabularies." CR CR ." To play, type BREAKFORTH then select" CR ." speed and number of balls. Press enter" CR ." after each selection." CR CR ." To move your paddle, use the right and" CR ." left arrow keys." CR 14 20 GOTOXY ." GOOD LUCK!" 0 22 GOTOXY --> ( BREAKFORTH adapted from A. Schaefer, BYTE Aug 80) : ARRAY <BUILDS 2 * ALLOT DOES> SWAP 2 * + ; 90 ARRAY BLOCKMAP 0 VARIABLE #BLOCKS 0 VARIABLE SPEED 0 VARIABLE SPVAR 0 VARIABLE SCORE 0 VARIABLE XPOS 0 VARIABLE YPOS 0 VARIABLE PPOS 1 VARIABLE XDIR 1 VARIABLE YDIR 0 VARIABLE BEST : LINE 0 SWAP GOTOXY ; : BALLSET GOTOXY 42 EMIT ; : BALLCLR GOTOXY 32 EMIT ; : PDLSET PPOS @ 22 GOTOXY 61 DUP DUP EMIT EMIT EMIT ; : PDLCLR PPOS @ 22 GOTOXY 32 DUP DUP EMIT EMIT EMIT ; : MOVEPDL PDLCLR 83 = IF -1 PPOS @ + 2 MAX PPOS ! ELSE 1 PPOS @ + 35 MIN PPOS ! ENDIF PDLSET ; : PADDLE ?TERMINAL IF QUIT ENDIF ?KEY -DUP IF MOVEPDL ENDIF ; : BEEP 52 GPLLNK ; : BOP 50 0 DO BEEP LOOP ; : BLOCKMAPINDEX -2 + 18 * SWAP 2 / + 1- ; --> ( BREAKFORTH SCREEN 2) : BLKTST YPOS @ 7 < IF XPOS @ YPOS @ BLOCKMAPINDEX BLOCKMAP @ ELSE 0 ENDIF ; : BLKCLR OVER OVER SWAP 126 AND SWAP GOTOXY 32 EMIT 32 EMIT BLOCKMAPINDEX BLOCKMAP 0 SWAP ! ; : BLKSET OVER OVER GOTOXY 91 EMIT 93 EMIT BLOCKMAPINDEX BLOCKMAP 1 SWAP ! ; : WALLSET 37 2 DO I 1 AND 0= IF I 2 BLKSET I 3 BLKSET I 4 BLKSET I 5 BLKSET I 6 BLKSET ENDIF LOOP 90 #BLOCKS ! ; : INIT CLS 0 LINE ." Speed (1-9, 1 is fastest) : " KEY DUP EMIT KEY DROP 48 - 1 MAX 9 MIN 5 * SPEED ! 0 LINE ." Number of balls desired (1-9) : " KEY DUP EMIT KEY DROP 48 - 1 MAX 9 MIN CLS 40 0 DO I 1 GOTOXY 61 EMIT LOOP 22 1 DO 0 I GOTOXY 124 EMIT 124 EMIT 38 I GOTOXY 124 EMIT 124 EMIT LOOP --> ( BREAKFORTH SCREEN 3) WALLSET 0 SCORE ! 0 LINE 0 0 GOTOXY ." Score: 0 " 15 0 GOTOXY ." Best: " BEST ? 30 0 GOTOXY ." Ball: " ; : XCHK XPOS @ 2 < IF XDIR @ MINUS XDIR ! 2 XPOS ! BEEP ENDIF XPOS @ 37 > IF XDIR @ MINUS XDIR ! 37 XPOS ! BEEP ENDIF ; : YCHK YPOS @ 7 < IF SPVAR @ 8 MIN SPVAR ! ENDIF YPOS @ 6 < IF SPVAR @ 7 MIN SPVAR ! ENDIF YPOS @ 5 < IF SPVAR @ 6 MIN SPVAR ! ENDIF YPOS @ 4 < IF SPVAR @ 5 MIN SPVAR ! ENDIF YPOS @ 3 < IF SPVAR @ 4 MIN SPVAR ! ENDIF YPOS @ 2 < IF 1 YDIR ! 2 YPOS ! 2 SPVAR ! BEEP ENDIF ; 5 ARRAY PDLVEC -2 0 PDLVEC ! -1 1 PDLVEC ! 0 2 PDLVEC ! 1 3 PDLVEC ! 2 4 PDLVEC ! --> ( BREAKFORTH SCREEN 4) : PCHK 0 YPOS @ 21 > IF 21 YPOS ! XPOS @ PPOS @ - 1+ DUP 0< 0= OVER 5 < AND IF -1 YDIR ! BEEP PDLVEC @ DUP 0= IF DROP ELSE XDIR ! ENDIF ELSE DROP 1+ ENDIF ENDIF ; : CLR XPOS @ YPOS @ BLKCLR YPOS @ 27 - ABS SCORE +! 7 0 GOTOXY SCORE ? BOP YDIR @ MINUS YDIR ! #BLOCKS @ 1- #BLOCKS ! ; : BALLCHK YDIR @ YPOS +! XDIR @ XPOS +! XCHK YCHK PCHK BLKTST IF CLR ENDIF ; : BALL XPOS @ YPOS @ BALLCLR BALLCHK DUP 0= IF XPOS @ YPOS @ BALLSET ENDIF ; : LAUNCH 2 RND 1 = IF 1 ELSE -1 ENDIF XDIR ! 1 YDIR ! 34 RND 3 + XPOS ! 8 YPOS ! 10 SPVAR ! ; : GAMECHK #BLOCKS @ 0= IF WALLSET SPEED @ 5 - 5 MAX SPEED ! LAUNCH ENDIF ; --> ( BREAKFORTH SCREEN 5 - MAIN LOOP) : DELAY SPEED @ SPVAR @ * 0 DO LOOP ; : BREAKFORTH RANDOMIZE BEGIN 18 PPOS ! INIT PDLSET 0 DO 2000 SPEED @ / 0 DO DELAY PADDLE LOOP 36 0 GOTOXY I 1+ . LAUNCH BEGIN 10 0 DO PADDLE DELAY LOOP BALL GAMECHK UNTIL 100 0 DO 54 GPLLNK LOOP LOOP SCORE @ BEST @ MAX BEST ! 200 0 DO DELAY LOOP 12 8 GOTOXY ." Play again? " KEY DUP EMIT KEY DROP 89 = 0= UNTIL CLS 0 0 GOTOXY ; ;S FIAD blocks file of above game: BREAKFORTH.zip ...lee 2 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 1, 2015 Author Share Posted July 1, 2015 ... works with no modification at all. It is a text adaptation of Breakout by Clint Pulley, called BreakForth: Thanks Lee, I'll be sure to check this out tomorrow evening when I have more time. Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 1, 2015 Share Posted July 1, 2015 The disk image where I found Clint Pulley's BreakForth is on WHTech: BCS078.DSK The other TI Forth disk images I found in the same library are BCS009.DSK, BCS010.DSK, BCS030.DSK, BCS031.DSK, BCS042.DSK, BCS059.DSK, BCS060.DSK and BCS078.DSK. A discussion of each of the disks is in the PDF file in the same directory. I will be going through most of these to see what needs to be changed to make them work with fbForth. ...lee 1 Quote Link to comment Share on other sites More sharing options...
Willsy Posted July 1, 2015 Share Posted July 1, 2015 Oh well, I cannot mess around anymore today. I gotta hit the rack early, got a long day tomorrow... I'll fix it. I screwed up somewhere. Did you try loading from the source code instead? The problem is, BSAVED are very specific to the version of TF. So, a program BSAVED in TF1.1 will not work in TF1.2; however, compiling from the source code would. I'll post the fix in a new thread, since this thread is concerned with fbForth. Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 1, 2015 Share Posted July 1, 2015 I have always intended to port Darkstar to fbForth. I suppose now is as good a time as any! ...lee Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 24, 2015 Share Posted July 24, 2015 I am almost finished with my fbForth-2.0 port of DarkStar: Necessary changes were Adding words that fbForth 2.0 does not have—mostly words from Forth 83, the basis of TurbForth. Words that work differently in fbForth 2.0—notably, EMIT , CHAR , JOYST , NOT (This is not part of fbForth 2.0; but, the TI-suggested definition works differently and the presumed value of true returned by words returning a true/false flag is 1 in fbForth and -1 in TurboForth. This does not affect words testing for true or false because any non-zero value is true; but, when a program uses the expected value for true, as does DarkStar, things can go awry for conversions.) and The VDP words, COLOR and GCHAR (the stack order is reversed or nearly so). Yet to do: Fix a problem with the time-indicator line and Rewrite SCROLL as ALC because SCROLL is interminably SLOW! in high-level Forth. ...lee [Edited, with edits in blue.] 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted July 24, 2015 Share Posted July 24, 2015 It was nice discussing the fB Forth differences from TurboForth with you at lunch today, Lee! I still have to sneak the cartridge cases into the house without She-Who-Must-Be-Obeyed noticing them. . .she did see the nice colorful Scott Foresman cartridges I got in the mail though (I now have half a dozen different Red math cartridges and one Blue reading cartridge). Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 24, 2015 Share Posted July 24, 2015 It was nice discussing the fB Forth differences from TurboForth with you at lunch today, Lee! I still have to sneak the cartridge cases into the house without She-Who-Must-Be-Obeyed noticing them. . .she did see the nice colorful Scott Foresman cartridges I got in the mail though (I now have half a dozen different Red math cartridges and one Blue reading cartridge). A pleasure indeed—as always! ...lee Quote Link to comment Share on other sites More sharing options...
Opry99er Posted July 24, 2015 Share Posted July 24, 2015 Lee, please explain why SCROLL is significantly slower in high-level Forth... I would have thought the speed difference would have been negligible!! Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 25, 2015 Share Posted July 25, 2015 Lee, please explain why SCROLL is significantly slower in high-level Forth... I would have thought the speed difference would have been negligible!! Well, part of it is likely my programming of the word; but, Forth words defined with : (colon) are compilations or lists of code field addresses (CFAs or execution tokens), which means that the inner interpreter reads the CFA to find out what address to branch to. The CFA of every colon definition points to colon's runtime code, which pushes a return address to the return stack and gets the next CFA in the definition. If that is also a colon definition, the process repeats, growing the return stack. Since the colon runtime code and the address interpreter are in scratchpad RAM, the process is fast, but inherently slower than ALC because of the added overhead of processing the CFA list. If, on the other hand, I program SCROLL in Forth Assembler, its CFA will point to its own parameter field, which will contain the first executable ALC of the definition. Even some of this code may need to call the inner interpreter; but, it will usually be faster because most of the code is ALC that is executing directly within the word. My high-level definition of SCROLL has two loops that cover the panel or window being scrolled. One loop walks the columns and the other the rows, depending on which direction we're scrolling. The outer loop reads one wrap character and saves it while the inner loop reads each of the rest of the characters in the currently scrolling row/column one at a time and writes it to its destination one character away in the scroll direction. The outer loop then writes the wrap character or a space, depending on the value of the WRAP variable, before advancing to the next column/row. Every character in the panel is read and written by fbForth's high-level VSBR and VSBW , which are not quite as fast as the ALC functions they call because of the address interpreter overhead mentioned above. If the panel is the entire screen in graphics mode, say, that is 32 columns by 24 rows = 768 characters read (768 calls to VSBR ) and 768 written (768 calls to VSBW ). Like I said above, I think Forth Assembler will speed that up. That's what I am going to try first. If that does not speed things up sufficiently, I will code it more like @Willsy did with his TurboForth ALC, where IIRC he processes one line at a time, but must handle up/down scrolling differently from left/right scrolling. My code is general purpose, but thus must read/write one character at a time because there is no easy way to read/write multiple VRAM bytes in columns because they are not contiguous bytes. Sorry for the long-winded explanation. Now to fix it... ...lee Quote Link to comment Share on other sites More sharing options...
Opry99er Posted July 25, 2015 Share Posted July 25, 2015 Thank you for the thorough explanation. Interesting how that works. Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 25, 2015 Share Posted July 25, 2015 (edited) Here is my port to fbForth 2.0 of @Willsy's DarkStar: DarkStar_fbForth2.zip Both files need to be in DSK1—DARKSTAR is the game and DKSTRCHR is the font file loaded by it. Be careful if you are using the same DSK1 for TurboForth because the TurboForth DarkStar blocks file has the same name (DARKSTAR)!! To start the game, make DSK1.DARKSTAR the current blocks file and load block #1: USEBFL DSK1.DARKSTAR 1 LOAD To get fbForth back to using the default font after the game, type the following: 0 SCRFNT ! FNT ...lee Edited July 25, 2015 by Lee Stewart 1 Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 27, 2015 Share Posted July 27, 2015 In Post#1006 of the fbForth development thread I posted an updated ZIP file for DarkStar that has a compiled version that will load faster than the one above. The above version is there as well. ...lee 1 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 27, 2015 Author Share Posted July 27, 2015 In Post#1006 of the fbForth development thread I posted an updated ZIP file for DarkStar... Been there, downloaded, installed and played... ... tomorrow after work, I plan to rename it to FBLOCKS, (on a separate disk image) and try to get it to 'auto start' upon loading. Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 27, 2015 Share Posted July 27, 2015 Been there, downloaded, installed and played... ... tomorrow after work, I plan to rename it to FBLOCKS, (on a separate disk image) and try to get it to 'auto start' upon loading. There is a simple way to do that in the spoiler below. If you want to work it out yourself first, DO NOT open the spoiler! Before you rename DARKSTAR, you want to copy block #30 to block #1 so that, after renaming DARKSTAR to FBLOCKS, it will autoload the compiled version. Ensure FBLOCKS is the current blocks file. You can verify that by typing MENU . Then do the following to load the CPYBLK utility to do the block copy (let's presume that DARKSTAR is on DSK2): 4 LOAD CPYBLK 30 30 DSK2.DARKSTAR 1 DSK2.DARKSTAR Now you can rename DARKSTAR to FBLOCKS. After you put that disk in DSK1, the next time you boot fbForth, DARKSTAR will autoload. You can also restart fbForth by typing COLD . ...lee 2 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 27, 2015 Author Share Posted July 27, 2015 Thanks, now all I need to do is get past having to type in DARKSTAR and then figure out how to bypass all the into stuff and go straight to the Keyboard or Joystick selection screen. Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 27, 2015 Share Posted July 27, 2015 Thanks, now all I need to do is get past having to type in DARKSTAR and then figure out how to bypass all the into stuff and go straight to the Keyboard or Joystick selection screen. I'll post another answer-in-a-spoiler for the pre-compiled version after I get a little breakfast. ...lee Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted July 27, 2015 Share Posted July 27, 2015 Presuming that you copied block #30 to block #1 here are two scenarios of what you need to do to bypass the intro screens and either (1) autostart the game or (2) select joystick/keyboard mode and then autostart the game: To just autostart the game: For using the joystick as the play mode ( JoystickMode? defaults to using the joystick), change line #6 to Joystick Game ;S You can delete line #7 or not. The second ;S will be ignored after the one on line #6 stops loading the block. Joystick speaks, “Joystick is on.” For using the keyboard as the play mode, change line #6 to FALSE TO JoystickMode? Keyboard Game ;S Keyboard speaks, “Keyboard is on.” To first select joystick/keyboard mode and then autostart the game, change lines #6 to the end: : GetMode PAGE ." Joystick mode, J or K? " BEGIN KEY CASE 74 OF 1 TRUE Joystick ENDOF 75 OF 1 FALSE Keyboard ENDOF 0 TRUE ROT ENDCASE TO JoystickMode? UNTIL ; GetMode Game ;S ...lee Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted July 27, 2015 Share Posted July 27, 2015 hmmm, I do not know where to fiind any Forth-Proggies yet, BUT from today on I know where to find the cartridge :) big thanks to Lee 2 Quote Link to comment Share on other sites More sharing options...
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