| 1 | open BitVectors;; |
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| 2 | open Physical;; |
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| 3 | |
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| 4 | exception CodeTooLarge |
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| 5 | |
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| 6 | type time = int;; |
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| 7 | type line = [ `P1 of byte |
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| 8 | | `P3 of byte |
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| 9 | | `SerialBuff of [ `Eight of byte | `Nine of BitVectors.bit * byte ]];; |
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| 10 | |
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| 11 | val string_of_line: line -> string;; |
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| 12 | (* In: reception time, line of input, new continuation, |
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| 13 | Out: transmission time, output line, expected duration until reply, |
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| 14 | new continuation. |
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| 15 | *) |
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| 16 | type continuation = |
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| 17 | [`In of time * line * continuation] option * |
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| 18 | [`Out of (time -> line -> time * continuation) ] |
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| 19 | |
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| 20 | type status = private |
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| 21 | { code_memory: WordMap.map; (* can be reduced *) |
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| 22 | low_internal_ram: Byte7Map.map; |
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| 23 | high_internal_ram: Byte7Map.map; |
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| 24 | external_ram: WordMap.map; (* can be reduced *) |
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| 25 | |
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| 26 | pc: word; |
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| 27 | |
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| 28 | (* sfr *) |
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| 29 | sp: byte; |
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| 30 | dpl: byte; |
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| 31 | dph: byte; |
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| 32 | pcon: byte; |
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| 33 | tcon: byte; |
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| 34 | tmod: byte; |
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| 35 | tl0: byte; |
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| 36 | tl1: byte; |
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| 37 | th0: byte; |
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| 38 | th1: byte; |
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| 39 | p1: byte; |
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| 40 | p1_latch: byte; |
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| 41 | scon: byte; |
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| 42 | sbuf: byte; |
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| 43 | ie: byte; |
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| 44 | p3: byte; |
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| 45 | p3_latch: byte; |
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| 46 | ip: byte; |
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| 47 | psw: byte; |
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| 48 | acc: byte; |
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| 49 | b: byte; |
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| 50 | t2con: byte; (* 8052 only *) |
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| 51 | rcap2l: byte; (* 8052 only *) |
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| 52 | rcap2h: byte; (* 8052 only *) |
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| 53 | tl2: byte; (* 8052 only *) |
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| 54 | th2: byte; (* 8052 only *) |
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| 55 | |
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| 56 | previous_p1_val: bool; |
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| 57 | previous_p3_val: bool; |
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| 58 | |
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| 59 | clock: time; |
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| 60 | timer0: word; |
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| 61 | timer1: word; |
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| 62 | timer2: word; (* can be missing *) |
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| 63 | expected_out_time: [ `None | `Now | `At of time ]; |
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| 64 | io: continuation |
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| 65 | } |
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| 66 | |
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| 67 | val string_of_status: status -> string |
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| 68 | |
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| 69 | module IntMap: Map.S with type key = int |
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| 70 | |
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| 71 | val assembly: |
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| 72 | ASM.assembly_program -> BitVectors.byte list (*ASM.instruction list * symbol_table *) * string IntMap.t |
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| 73 | |
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| 74 | (* |
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| 75 | val link: |
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| 76 | (ASM.instruction list * symbol_table * cost_map) list -> BitVectors.byte list |
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| 77 | *) |
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| 78 | |
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| 79 | val initialize: status |
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| 80 | |
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| 81 | val load_mem: Physical.WordMap.map -> status -> status |
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| 82 | val load: BitVectors.byte list -> status -> status |
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| 83 | |
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| 84 | exception Halt (* to be raised to stop execution *) |
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| 85 | |
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| 86 | (* the callback function is used to observe the execution |
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| 87 | trace; it can raise Hold to stop execution. Otherwise |
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| 88 | the processor never halts. *) |
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| 89 | val execute: (status -> unit) -> status -> status |
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| 90 | |
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| 91 | val fetch: Physical.WordMap.map -> word -> ASM.instruction * word * int |
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