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annotate clojure/com/aurellem/gb/rlm_assembly.clj @ 377:1f14c1b8af7e

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working on main bootstrap program
author Robert McIntyre <rlm@mit.edu>
date Wed, 11 Apr 2012 10:47:27 -0500
parents
children 5c4a30521d09
rev   line source
rlm@377 1 (ns com.aurellem.gb.rlm-assembly
rlm@377 2 "Version of main bootstrap program that is valid output for the
rlm@377 3 item-writer program."
rlm@377 4 (:use (com.aurellem.gb gb-driver assembly util vbm constants))
rlm@377 5 (:use (com.aurellem.run bootstrap-1))
rlm@377 6 (:import [com.aurellem.gb.gb_driver SaveState]))
rlm@377 7
rlm@377 8 ;; Specs for Main Bootstrap Program
rlm@377 9
rlm@377 10 ;; Number-Input
rlm@377 11 ;; Number input works using all eight buttons to
rlm@377 12 ;; spell out an 8 bit number. The order of buttons is
rlm@377 13 ;; [:d :u :l :r :start :select :b :a] --> 11111111
rlm@377 14 ;; [ :l :start :a] --> 00101001
rlm@377 15
rlm@377 16 ;;; MODE-SELECT
rlm@377 17 ;; The bootstrap program starts in MODE-SELECT mode.
rlm@377 18 ;; MODE-SELECT transitions to one of three modes depending
rlm@377 19 ;; on which buttons are pressed:
rlm@377 20 ;; 0 (no-buttons) : MODE-SELECT
rlm@377 21 ;; 8 [:start] : WRITE-BYTES
rlm@377 22 ;; 0xFF (all-buttons) : JUMP
rlm@377 23
rlm@377 24 ;;; WRITE-BYTES
rlm@377 25
rlm@377 26 ;; WRITE-BYTES mode writes sequences of arbitray values to
rlm@377 27 ;; arbitray memory locations. It expects you to enter a
rlm@377 28 ;; header of three bytes describing what to write:
rlm@377 29
rlm@377 30 ;; Byte 0 : Number of Bytes to Write
rlm@377 31 ;; Byte 1 : Start Address High Byte
rlm@377 32 ;; Byte 1 : Start Address Low Byte
rlm@377 33
rlm@377 34 ;; Then, you enter the number of bytes specified in Byte 0
rlm@377 35 ;; they are written to the start address in
rlm@377 36 ;; sequence. After the last byte is written control
rlm@377 37 ;; returns to MODE-SELECT mode.
rlm@377 38
rlm@377 39 ;; Example: to write the sequence [1 2 3 4] starting at
rlm@377 40 ;; address 0xC01F enter
rlm@377 41 ;; Byte 0 : 4 (will write four bytes)
rlm@377 42 ;; Byte 1 : 0xC0 (high byte of 0xC01F)
rlm@377 43 ;; Byte 2 : 0x1F (low byte of 0xC01F)
rlm@377 44 ;; Byte 3 : 1 (write 1 to 0xC01F)
rlm@377 45 ;; Byte 4 : 2 (write 2 to 0xC020)
rlm@377 46 ;; Byte 5 : 3 (write 3 to 0xC021)
rlm@377 47 ;; Byte 6 : 4 (write 4 to 0xC022)
rlm@377 48
rlm@377 49 ;;; JUMP
rlm@377 50 ;; JUMP mode jumps program control to any arbitray
rlm@377 51 ;; location. It expects you to enter two bytes which
rlm@377 52 ;; correspond to the high and low bytes of the memory
rlm@377 53 ;; address to which you want to jump.
rlm@377 54 ;; Byte 0 : Jump Address High Byte
rlm@377 55 ;; Byte 1 : Jump Address Low Byte
rlm@377 56
rlm@377 57 ;; Example: to jump to address 0x1234 enter
rlm@377 58 ;; Byte 0 : 0x12 (high byte of 0x1234)
rlm@377 59 ;; Byte 1 : 0x34 (low byte of 0x1234)
rlm@377 60
rlm@377 61
rlm@377 62
rlm@377 63 (defn main-bootstrap-program [start-address]
rlm@377 64 (let [[start-high start-low] (disect-bytes-2 start-address)]
rlm@377 65 [0xF3 0x18 0xFE]))
rlm@377 66
rlm@377 67 ;;;;;; TESTS ;;;;;;
rlm@377 68
rlm@377 69 (defn bootstrap-base []
rlm@377 70 (let [program (main-bootstrap-program pokemon-list-start)]
rlm@377 71 ;; make sure program is valid output for item-writer
rlm@377 72 (bootstrap-pattern program)
rlm@377 73 (-> (tick (mid-game))
rlm@377 74 (set-memory-range pokemon-list-start program)
rlm@377 75 (PC! pokemon-list-start))))
rlm@377 76
rlm@377 77 (defn test-write-bytes-mode []
rlm@377 78 (let [target-address 0xC00F
rlm@377 79 [target-high target-low] (disect-bytes-2 target-address)
rlm@377 80 assembly [0xF3 0x18 0xFE 0x12]
rlm@377 81 get-mem-region #(subvec (vec (memory %))
rlm@377 82 target-address (+ target-address 20))
rlm@377 83 before (bootstrap-base)
rlm@377 84 after
rlm@377 85 (-> before
rlm@377 86 (step []) ; make sure it can handle blanks
rlm@377 87 (step []) ; at the beginning.
rlm@377 88 (step [])
rlm@377 89 (step [:start]) ; select WRITE-BYTES mode
rlm@377 90 (step (buttons 4)) ; write 4 bytes
rlm@377 91 (step (buttons target-high))
rlm@377 92 (step (buttons target-low))
rlm@377 93 (step (buttons (nth assembly 0)))
rlm@377 94 (step (buttons (nth assembly 1)))
rlm@377 95 (step (buttons (nth assembly 2)))
rlm@377 96 (step (buttons (nth assembly 3)))
rlm@377 97 (step [])
rlm@377 98 (step [])
rlm@377 99 (step []))]
rlm@377 100 (println "before :" (get-mem-region before))
rlm@377 101 (println "after :" (get-mem-region after))
rlm@377 102 (assert (= assembly (take 4 (get-mem-region after))))
rlm@377 103 after))
rlm@377 104
rlm@377 105 (defn test-jump-mode []
rlm@377 106 (let [target-address 0xC00F
rlm@377 107 [target-high target-low] (disect-bytes-2 target-address)
rlm@377 108 post-jump
rlm@377 109 (-> (test-write-bytes-mode)
rlm@377 110 (step [])
rlm@377 111 (step [])
rlm@377 112 (step [])
rlm@377 113 (step (buttons 0xFF)) ; Select JUMP mode.
rlm@377 114 (step (buttons target-high))
rlm@377 115 (step (buttons target-low)))
rlm@377 116 program-counters
rlm@377 117 (capture-program-counter
rlm@377 118 post-jump
rlm@377 119 10000)]
rlm@377 120 (println program-counters)
rlm@377 121 (assert (contains? (set program-counters) target-address))
rlm@377 122 post-jump))