4 ms·

An interesting related and older project is this post showing a bit of using Lisp to write code for the NES: https://ahefner.livejournal.com/20528.html https://

by Jach 3y ago

An interesting related and older project is this post showing a bit of using Lisp to write code for the NES: https://ahefner.livejournal.com/20528.html https://ahefner.livejournal.com/20528.html Making an assembler in Lisp is not a daunting project.

ngcc_hk 3y ago
Another issue with several .asd files, no readme and not sure how to start. I am interested as this is simpler than the one here. At least the programmer has a test ROM sort of. Just not sure how to start. As might be noticed, I have spent a few days here to try to sort out a way to start a simple (and possibly) interesting simple lisp project. NES as said in that web page is great. Just no good starting point (or may I say too complete as a starting point) for lisp project.
- Jach 3y ago
  I think if you've never written any sort of lower level code before it's somewhat more daunting. I did spend a little time trying to get this emulator to run but ran into too many issues and gave up -- it's either a problem with some optimizations no longer being valid and raising type errors by default now (e.g. specifying a type as string does not, like other languages, implicitly mean it's either string or null¹) or something about the sdl2 bindings has changed (it's not the most stable of library binds unfortunately and has some misleading docs/examples out there, and the with- macros are not good and best avoided). The assembler project I linked on the other hand works, though as you say having multiple asdf files is annoying, and the dollhouse.lisp demo makes an unfortunate choice of setting its *path* to #.*compile-file-pathname* Here's what I did to run it without changing that line (which would be better), translate to your flavor of editor+slime for convenience: $ git clone https://github.com/ahefner/asm6502 $ cd asm6502/ $ sbcl * (asdf-here) ; my own function I have in ~/.sbclrc, it is just: ;(defun asdf-here () ; (push (uiop:getcwd) asdf:*central-registry*)) * (asdf:load-system "ichr") T * (defpackage :dollhouse-demo) #<PACKAGE "DOLLHOUSE-DEMO"> * (defvar dollhouse-demo::*path* "hacks/") DOLLHOUSE-DEMO::*PATH* * (load "hacks/dollhouse.lisp") ; ...output ; ;(:NUM-UNIQUE 458) ;Empty space begins at F600 ;Created "/tmp/dollhouse.nes" T * ^D $ fceux /tmp/dollhouse.nes ¹Example of SBCL raising a type error: (let ((x 3)) (declare (type integer x)) x) ; -> 3 (let ((x nil)) (declare (type integer x)) x) ; in: LET ((X NIL)) ; (LET ((X NIL)) ; (DECLARE (TYPE INTEGER X)) ; X) ; ; caught WARNING: ; Constant NIL conflicts with its asserted type INTEGER. ; See also: ; The SBCL Manual, Node "Handling of Types" ; ; compilation unit finished ; caught 1 WARNING condition debugger invoked on a SIMPLE-TYPE-ERROR in thread #<THREAD tid=9761 "main thread" RUNNING {1001750003}>: Value of NIL in (LET ((X NIL)) (DECLARE (TYPE INTEGER X)) X) is NIL, not a INTEGER.

by Jach 3y ago

ngcc_hk 3y ago

Another issue with several .asd files, no readme and not sure how to start. I am interested as this is simpler than the one here. At least the programmer has a test ROM sort of. Just not sure how to start. As might be noticed, I have spent a few days here to try to sort out a way to start a simple (and possibly) interesting simple lisp project. NES as said in that web page is great. Just no good starting point (or may I say too complete as a starting point) for lisp project.

Jach 3y ago
I think if you've never written any sort of lower level code before it's somewhat more daunting. I did spend a little time trying to get this emulator to run but ran into too many issues and gave up -- it's either a problem with some optimizations no longer being valid and raising type errors by default now (e.g. specifying a type as string does not, like other languages, implicitly mean it's either string or null¹) or something about the sdl2 bindings has changed (it's not the most stable of library binds unfortunately and has some misleading docs/examples out there, and the with- macros are not good and best avoided). The assembler project I linked on the other hand works, though as you say having multiple asdf files is annoying, and the dollhouse.lisp demo makes an unfortunate choice of setting its *path* to #.*compile-file-pathname* Here's what I did to run it without changing that line (which would be better), translate to your flavor of editor+slime for convenience: $ git clone https://github.com/ahefner/asm6502 $ cd asm6502/ $ sbcl * (asdf-here) ; my own function I have in ~/.sbclrc, it is just: ;(defun asdf-here () ; (push (uiop:getcwd) asdf:*central-registry*)) * (asdf:load-system "ichr") T * (defpackage :dollhouse-demo) #<PACKAGE "DOLLHOUSE-DEMO"> * (defvar dollhouse-demo::*path* "hacks/") DOLLHOUSE-DEMO::*PATH* * (load "hacks/dollhouse.lisp") ; ...output ; ;(:NUM-UNIQUE 458) ;Empty space begins at F600 ;Created "/tmp/dollhouse.nes" T * ^D $ fceux /tmp/dollhouse.nes ¹Example of SBCL raising a type error: (let ((x 3)) (declare (type integer x)) x) ; -> 3 (let ((x nil)) (declare (type integer x)) x) ; in: LET ((X NIL)) ; (LET ((X NIL)) ; (DECLARE (TYPE INTEGER X)) ; X) ; ; caught WARNING: ; Constant NIL conflicts with its asserted type INTEGER. ; See also: ; The SBCL Manual, Node "Handling of Types" ; ; compilation unit finished ; caught 1 WARNING condition debugger invoked on a SIMPLE-TYPE-ERROR in thread #<THREAD tid=9761 "main thread" RUNNING {1001750003}>: Value of NIL in (LET ((X NIL)) (DECLARE (TYPE INTEGER X)) X) is NIL, not a INTEGER.