Mercurial > vba-clojure

     1 (ns com.aurellem.gb.rlm-assembly

     2   "Version of main bootstrap program that is valid output for the

     3    item-writer program."

     4   (:use (com.aurellem.gb gb-driver assembly util vbm constants))

     5   (:use (com.aurellem.run bootstrap-1))

     6   (:import [com.aurellem.gb.gb_driver SaveState]))

     7 

     8 ;; Specs for Main Bootstrap Program

     9 

    10 ;; Number-Input

    11 ;; Number input works using all eight buttons to

    12 ;;   spell out an 8 bit number.  The order of buttons is

    13 ;;   [:d :u :l :r :start :select :b :a]  -->  11111111

    14 ;;   [      :l    :start            :a]  -->  00101001

    15 

    16 ;;; MODE-SELECT

    17 ;;   The bootstrap program starts in MODE-SELECT mode.

    18 ;;   MODE-SELECT transitions to one of three modes depending

    19 ;;   on which buttons are pressed:

    20 ;;       0   (no-buttons)  :  MODE-SELECT

    21 ;;       8   [:start]      :  WRITE-BYTES

    22 ;;    0xFF   (all-buttons) :  JUMP

    23 

    24 ;;; WRITE-BYTES

    25 

    26 ;;   WRITE-BYTES mode writes sequences of arbitray values to

    27 ;;   arbitray memory locations. It expects you to enter a

    28 ;;   header of three bytes describing what to write:

    29 

    30 ;;    Byte 0  : Number of Bytes to Write

    31 ;;    Byte 1  : Start Address High Byte

    32 ;;    Byte 1  : Start Address Low  Byte

    33 

    34 ;;   Then, you enter the number of bytes specified in Byte 0

    35 ;;   they are written to the start address in

    36 ;;   sequence. After the last byte is written control

    37 ;;   returns to MODE-SELECT mode.

    38 

    39 ;;   Example: to write the sequence [1 2 3 4] starting at

    40 ;;   address 0xC01F enter

    41 ;;    Byte 0  : 4 (will write four bytes)

    42 ;;    Byte 1  : 0xC0  (high byte of 0xC01F)

    43 ;;    Byte 2  : 0x1F  (low  byte of 0xC01F)

    44 ;;    Byte 3  : 1 (write 1 to 0xC01F)

    45 ;;    Byte 4  : 2 (write 2 to 0xC020)

    46 ;;    Byte 5  : 3 (write 3 to 0xC021)

    47 ;;    Byte 6  : 4 (write 4 to 0xC022)

    48 

    49 ;;; JUMP 

    50 ;;   JUMP mode jumps program control to any arbitray

    51 ;;   location. It expects you to enter two bytes which

    52 ;;   correspond to the high and low bytes of the memory

    53 ;;   address to which you want to jump.

    54 ;;    Byte 0  : Jump Address High Byte

    55 ;;    Byte 1  : Jump Address Low  Byte

    56 

    57 ;;   Example: to jump to address 0x1234 enter

    58 ;;    Byte 0  : 0x12 (high byte of 0x1234)

    59 ;;    Byte 1  : 0x34 (low  byte of 0x1234)

    60 

    61 

    62 (defn ->signed-8-bit [n]

    63   (if (< n 0)

    64     (+ 256 n) n))

    65 

    66 (defn frame-metronome []

    67   (let [timing-loop

    68         [;;0x01 ; \

    69          ;;0x43 ;  |

    70          ;;0xFE ;  |  load 0xFF44 into BC without repeats

    71          ;;0x0C ;  |

    72          ;;0x04 ; /

    73          ;;0x0A ;; (BC) -> A, now A = LY (vertical line coord)

    74          

    75          0x11 ; \                                           

    76          0x43 ;  |                                           

    77          0xFE ;  |  load 0xFF44 into DE without repeats      

    78          0x1C ;  |                                           

    79          0x14 ; /                                           

    80          0x1A ;; (DE) -> A, now A = LY (vertical line coord)

    81          ]

    82         continue-if-144

    83         [0xFE

    84          144     ;; compare LY (in A) with 144

    85          0x20    ;; jump back to beginning if LY != 144 (not-v-blank)

    86          (->signed-8-bit

    87           (+ -4 (- (count timing-loop))))]

    88         spin-loop

    89         [;;0x05 ;; dec B, which is 0xFF

    90          0x15 ;; dec D, which is 0xFF

    91          0x20 ;; spin until B==0

    92          0xFD]]

    93     (concat timing-loop continue-if-144 spin-loop)))

    94 

    95 (defn test-frame-metronome

    96   "Ensure that frame-metronome ticks exactly once every frame."

    97   ([] (test-frame-metronome 151))

    98   ([steps]

    99      (let [inc-B [0x04 0x18

   100                   (->signed-8-bit

   101                    (+ -3 (- (count (frame-metronome)))))]

   102            program (concat (frame-metronome) inc-B)

   103            count-frames

   104            (-> (tick (mid-game))

   105                (IE! 0)

   106                (BC! 0)

   107                (set-memory-range pokemon-list-start program)

   108                (PC! pokemon-list-start))

   109            B-after-moves (B (run-moves count-frames (repeat steps [])))]

   110        (println "B:" B-after-moves) 

   111        (assert (= steps B-after-moves))

   112 

   113        (println "B =" B-after-moves "after" steps "steps")

   114        count-frames)))

   115 

   116 (defn read-user-input []

   117   [;;0x01 ;\

   118    ;;0x01 ; |

   119    ;;0xFE ; |  load 0xFF00 into BC without repeats

   120    ;;0x04 ; |

   121    ;;0x0D ;/

   122 

   123    0x11 ; \                                           

   124    0x01 ;  |                                           

   125    0xFE ;  |  load 0xFF44 into DE without repeats      

   126    0x14 ;  |                                           

   127    0x1D ; /                                           

   128    

   129    0x3E

   130    (Integer/parseInt "00100000" 2) ; prepare to measure d-pad

   131 

   132    0x12 

   133    0x1A ;; get D-pad info

   134    

   135    0xF5 ;; push AF

   136       

   137    0x3E

   138    (Integer/parseInt "00010000" 2) ; prepare to measure buttons

   139    

   140    0x12

   141    0x1A ;; get button info

   142 

   143    

   144    0xE6 ;; select bottom bits of A

   145    0x0F

   146 

   147    0x57 ;; A->D

   148 

   149    0xF1 ;; pop AF

   150 

   151    0xE6

   152    0x0F ;; select bottom bits of A

   153 

   154    0xCB

   155    0x37 ;; swap A nybbles

   156 

   157    0x5A ;; D->E            \ necessary to 

   158    0xB3 ;; (or A D) -> A   / prevent repeats.

   159  

   160    0x2F ;; (NOT A) -> A

   161    ])

   162 

   163 (defn test-read-user-input []

   164   (let [program

   165         (concat

   166          (frame-metronome) (read-user-input)

   167          [0x47 ;; A->B

   168           0x18

   169           (->signed-8-bit

   170            (+ (- (count (frame-metronome)))

   171               (- (count (read-user-input)))

   172               (- 3)))])

   173         read-input

   174         (-> (tick (mid-game))

   175             (IE! 0)

   176             (set-memory-range pokemon-list-start program)

   177             (PC! pokemon-list-start))]

   178     (dorun

   179       (for [i (range 0x100)]

   180         (assert (= (B (step read-input (buttons i))) i))))

   181      (println "Tested all inputs.")

   182     read-input))

   183 

   184 (def mode-select-mode      (Integer/parseInt "00000000" 2))

   185 (def write-mode            (Integer/parseInt "00000001" 2))

   186 (def jump-mode             (Integer/parseInt "10000000" 2))

   187 

   188 (def input-high-addr-jump  (Integer/parseInt "10000010" 2))

   189 (def input-high-addr-write (Integer/parseInt "00000010" 2))

   190 (def input-low-addr-jump   (Integer/parseInt "10000100" 2))

   191 (def input-low-addr-write  (Integer/parseInt "00000100" 2))

   192 

   193 (def input-write-num-mode  (Integer/parseInt "00001000" 2))

   194 (def do-write-mode         (Integer/parseInt "00010000" 2))

   195 

   196 

   197 

   198 

   199 

   200 

   201 

   202 (defn main-bootstrap-program [start-address]

   203   (let [[start-high start-low] (disect-bytes-2 start-address)

   204         jump-distance (+ (count (frame-metronome)

   205                                 (read-user-input)))

   206 

   207         init

   208         [0xAF 0x4F] ;; 0->A; 0->C;

   209         

   210         ;; HL = here

   211         ;; add C to HL

   212         ;; jp HL

   213         

   214         prepare-HL

   215         [0x21] ;; load HL from literal nn

   216                ;; nn == here defined below

   217          

   218         mode-dispatch

   219         [0x06  ;\

   220          0x01  ; | 0->B without repeats

   221          0x05  ;/

   222          0x09  ;; add BC to HL

   223          0xE9] ;; jp

   224 

   225         here

   226         (disect-bytes-2 (+ 2 start-address (count init)

   227                            jump-distance prepare-HL

   228                            (count mode-dispatch)))

   229         

   230 

   231 

   232         ;;(here) jr end

   233         

   234         ;;stuff

   235         ;;modify E

   236         ;;jr metronome

   237         

   238         ;;stuff

   239         ;;jr metronome

   240                         

   241         input-number

   242 

   243          [0x47  ;; A->B

   244           0x1E  ;;

   245           input-high-write-jump

   246           0x18

   247           (jump-distance ??)]

   248         

   249 

   250         

   251         input-high-write

   252         [0x

   253 

   254         

   255         

   256         

   257         

   258 

   259 

   260          (concat init (frame-metronome) (read-user-input)

   261                  prepare-HL here mode-dispatch)

   262                  

   263         

   264         

   265 

   266          

   267          

   268 

   269     

   270     ))

   271 

   272         

   273      

   274       

   275   

   276 

   277         

   278     

   279 

   280 

   281 ;;;;;; TESTS ;;;;;;

   282 

   283 (defn bootstrap-base []

   284   (let [program (main-bootstrap-program pokemon-list-start)]

   285     ;; make sure program is valid output for item-writer

   286     (bootstrap-pattern program)

   287     (-> (tick (mid-game))

   288         (set-memory-range pokemon-list-start program)

   289         (PC! pokemon-list-start))))

   290 

   291 (defn test-write-bytes-mode []

   292   (let [target-address 0xC00F

   293         [target-high target-low] (disect-bytes-2 target-address)

   294         assembly [0xF3 0x18 0xFE 0x12]

   295         get-mem-region  #(subvec (vec (memory %))

   296                                  target-address (+ target-address 20))

   297         before (bootstrap-base)

   298         after

   299         (-> before

   300             (step [])                       ; make sure it can handle blanks

   301             (step [])                       ; at the beginning.

   302             (step [])                      

   303             (step [:start])                 ; select WRITE-BYTES mode

   304             (step (buttons 4))              ; write 4 bytes

   305             (step (buttons target-high))

   306             (step (buttons target-low))

   307             (step (buttons (nth assembly 0)))

   308             (step (buttons (nth assembly 1)))

   309             (step (buttons (nth assembly 2)))

   310             (step (buttons (nth assembly 3)))

   311             (step [])

   312             (step [])

   313             (step []))]

   314             (println "before :" (get-mem-region before))

   315             (println "after  :" (get-mem-region after))

   316             (assert (= assembly (take 4 (get-mem-region after))))

   317     after))

   318 

   319 (defn test-jump-mode []

   320   (let [target-address 0xC00F

   321         [target-high target-low] (disect-bytes-2 target-address)

   322         post-jump

   323         (-> (test-write-bytes-mode)

   324             (step [])

   325             (step [])

   326             (step [])

   327             (step (buttons 0xFF))           ; Select JUMP mode.

   328             (step (buttons target-high))

   329             (step (buttons target-low)))

   330         program-counters

   331         (capture-program-counter 

   332          post-jump

   333          10000)]

   334     (println program-counters)

   335     (assert (contains? (set program-counters) target-address))

   336     post-jump))
author	Robert McIntyre <rlm@mit.edu>
date	Thu, 12 Apr 2012 09:21:40 -0500
parents	d8cbbf2a3133
children	a0d0e1a46b1d