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         continue-if-144

    75         [0xFE

    76          144     ;; compare LY (in A) with 144

    77          0x20    ;; jump back to beginning if LY != 144 (not-v-blank)

    78          (->signed-8-bit

    79           (+ -4 (- (count timing-loop))))]

    80         spin-loop

    81         [0x05 ;; dec B, which is 0xFF

    82          0x20 ;; spin until B==0

    83          0xFD]]

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

    85 

    86 (defn test-frame-metronome

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

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

    89   ([steps]

    90      (let [inc-D [0x14 0x18

    91                   (->signed-8-bit

    92                    (+ -3 (- (count (frame-metronome)))))]

    93            program (concat (frame-metronome) inc-D)

    94            count-frames

    95            (-> (tick (mid-game))

    96                (IE! 0)

    97                (DE! 0)

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

    99                (PC! pokemon-list-start))

   100            D-after-moves (D (run-moves count-frames (repeat steps [])))]

   101        (println "D:" D-after-moves) 

   102        (assert (= steps D-after-moves))

   103 

   104        (println "D =" D-after-moves "after" steps "steps")

   105        count-frames)))

   106 

   107 (defn read-user-input []

   108   [0x01 ;\

   109    0x01 ;|

   110    0xFE ;|  load 0xFF00 into BC without repeats

   111    0x04 ;|

   112    0x0D ;/

   113 

   114    0x3E

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

   116 

   117    0x02 

   118    0x0A ;; get D-pad info

   119    

   120    0xF5 ;; push AF

   121       

   122    0x3E

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

   124    

   125    0x02

   126    0x0A ;; get button info

   127 

   128    

   129    0xE6 ;; select bottom bits of A

   130    0x0F

   131 

   132    0x47 ;; A->B

   133 

   134    0xF1 ;; pop AF

   135 

   136    0xE6

   137    0x0F ;; select bottom bits of A

   138 

   139    0xCB

   140    0x37 ;; swap A nybbles

   141    

   142    0xB0 ;; (AND A B) -> A

   143    

   144    0x2F ;; (NOT A) -> A

   145    ])

   146 

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

   148   (let [program

   149         (concat

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

   151          [0x5F ;; A-> E

   152           0x18

   153           (->signed-8-bit

   154            (+ (- (count (frame-metronome)))

   155               (- (count (read-user-input)))

   156               (- 3)))])

   157         read-input

   158         (-> (tick (mid-game))

   159             (IE! 0)

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

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

   162     (dorun

   163       (for [i (range 0x100)]

   164         (assert (= (E (step read-input (buttons i))) i))))

   165      (println "Tested all inputs.")

   166     read-input))

   167 

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

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

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

   171 

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

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

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

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

   176 

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

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

   179 

   180 

   181 

   182 

   183 

   184 

   185 

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

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

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

   189                                 (read-user-input)))

   190 

   191         init

   192         [0x1E 0xFF 0x1C] ;; 0-> E without repeats

   193 

   194         

   195         ;; HL -> BC

   196         ;; HL = here

   197         ;; add E to HL

   198         ;; jp HL

   199         

   200         mode-dispatch

   201         [0x44

   202 

   203 

   204 

   205         ;;(here) jr metronome

   206         

   207         ;;stuff

   208         ;;modify E

   209         ;;jr metronome

   210         

   211         ;;stuff

   212         ;;jr metronome

   213 

   214         

   215         

   216         

   217         

   218         

   219         

   220         mode-dispatch

   221         [0xCB

   222          0x43  ;; test bit 0

   223 

   224          0xCB

   225          0x4B  ;; test bit 1

   226          

   227          0xCB

   228          0x53  ;; test bit 2

   229 

   230          0xCB

   231          0x5B  ;; test bit 3

   232 

   233          0xCB

   234          0x63  ;; test bit 4

   235 

   236          0xCB

   237          0x6B  ;; test bit 5

   238 

   239          ];;default

   240          

   241 

   242         mode-select

   243         [0x5F]  ;; A->E

   244 

   245         ;; delayed inputs

   246         input-high 0x67  ;; A->H

   247         input-low  0x6F  ;; A->L

   248         input-num  0x57  ;; A->D

   249 

   250         ;; final-actions

   251         jump       0xE9  ;; jp (HL)

   252         write      0x22  ;; A->(HL); inc HL

   253         input-mode 0x00  ;; no-op

   254           

   255 

   256 

   257          input-high

   258          [0x67   ;; A->H

   259           0x1E   ;; change mode

   260           input-low-mode]

   261         

   262         

   263 

   264 

   265         mode-dispatch

   266         

   267         

   268 

   269          

   270          

   271 

   272     

   273     ))

   274 

   275         

   276      

   277       

   278   

   279 

   280         

   281     

   282 

   283 

   284 ;;;;;; TESTS ;;;;;;

   285 

   286 (defn bootstrap-base []

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

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

   289     (bootstrap-pattern program)

   290     (-> (tick (mid-game))

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

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

   293 

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

   295   (let [target-address 0xC00F

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

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

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

   299                                  target-address (+ target-address 20))

   300         before (bootstrap-base)

   301         after

   302         (-> before

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

   304             (step [])                       ; at the beginning.

   305             (step [])                      

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

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

   308             (step (buttons target-high))

   309             (step (buttons target-low))

   310             (step (buttons (nth assembly 0)))

   311             (step (buttons (nth assembly 1)))

   312             (step (buttons (nth assembly 2)))

   313             (step (buttons (nth assembly 3)))

   314             (step [])

   315             (step [])

   316             (step []))]

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

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

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

   320     after))

   321 

   322 (defn test-jump-mode []

   323   (let [target-address 0xC00F

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

   325         post-jump

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

   327             (step [])

   328             (step [])

   329             (step [])

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

   331             (step (buttons target-high))

   332             (step (buttons target-low)))

   333         program-counters

   334         (capture-program-counter 

   335          post-jump

   336          10000)]

   337     (println program-counters)

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

   339     post-jump))
author	Robert McIntyre <rlm@mit.edu>
date	Thu, 12 Apr 2012 06:20:17 -0500
parents	8013915a07b3
children	d8cbbf2a3133