diff options
Diffstat (limited to 'ports.s')
| -rw-r--r-- | ports.s | 1188 |
1 files changed, 1188 insertions, 0 deletions
@@ -0,0 +1,1188 @@ + ;; Routines to process OUT and IN instructions. This is the + ;; bit that's unique to TI calculators. + + ;; Port is in d0, byte is in d1 + ;; Destroys a0 +port_in: + andi.w #$ff,d0 + add.w d0,d0 + add.w d0,d0 + movea.l lut_ports_in(pc,d0),a0 + jmp (a0) + rts + +lut_ports_in: + .int port_in_00 + .int port_in_01 + .int port_in_02 + .int port_in_03 + .int port_in_04 + .int port_in_05 + .int port_in_06 + .int port_in_07 + .int port_in_08 + .int port_in_09 + .int port_in_0a + .int port_in_0b + .int port_in_0c + .int port_in_0d + .int port_in_0e + .int port_in_0f + .int port_in_10 + .int port_in_11 + .int port_in_12 + .int port_in_13 + .int port_in_14 + .int port_in_15 + .int port_in_16 + .int port_in_17 + .int port_in_18 + .int port_in_19 + .int port_in_1a + .int port_in_1b + .int port_in_1c + .int port_in_1d + .int port_in_1e + .int port_in_1f + .int port_in_20 + .int port_in_21 + .int port_in_22 + .int port_in_23 + .int port_in_24 + .int port_in_25 + .int port_in_26 + .int port_in_27 + .int port_in_28 + .int port_in_29 + .int port_in_2a + .int port_in_2b + .int port_in_2c + .int port_in_2d + .int port_in_2e + .int port_in_2f + .int port_in_30 + .int port_in_31 + .int port_in_32 + .int port_in_33 + .int port_in_34 + .int port_in_35 + .int port_in_36 + .int port_in_37 + .int port_in_38 + .int port_in_39 + .int port_in_3a + .int port_in_3b + .int port_in_3c + .int port_in_3d + .int port_in_3e + .int port_in_3f + .int port_in_40 + .int port_in_41 + .int port_in_42 + .int port_in_43 + .int port_in_44 + .int port_in_45 + .int port_in_46 + .int port_in_47 + .int port_in_48 + .int port_in_49 + .int port_in_4a + .int port_in_4b + .int port_in_4c + .int port_in_4d + .int port_in_4e + .int port_in_4f + .int port_in_50 + .int port_in_51 + .int port_in_52 + .int port_in_53 + .int port_in_54 + .int port_in_55 + .int port_in_56 + .int port_in_57 + .int port_in_58 + .int port_in_59 + .int port_in_5a + .int port_in_5b + .int port_in_5c + .int port_in_5d + .int port_in_5e + .int port_in_5f + .int port_in_60 + .int port_in_61 + .int port_in_62 + .int port_in_63 + .int port_in_64 + .int port_in_65 + .int port_in_66 + .int port_in_67 + .int port_in_68 + .int port_in_69 + .int port_in_6a + .int port_in_6b + .int port_in_6c + .int port_in_6d + .int port_in_6e + .int port_in_6f + .int port_in_70 + .int port_in_71 + .int port_in_72 + .int port_in_73 + .int port_in_74 + .int port_in_75 + .int port_in_76 + .int port_in_77 + .int port_in_78 + .int port_in_79 + .int port_in_7a + .int port_in_7b + .int port_in_7c + .int port_in_7d + .int port_in_7e + .int port_in_7f + .int port_in_80 + .int port_in_81 + .int port_in_82 + .int port_in_83 + .int port_in_84 + .int port_in_85 + .int port_in_86 + .int port_in_87 + .int port_in_88 + .int port_in_89 + .int port_in_8a + .int port_in_8b + .int port_in_8c + .int port_in_8d + .int port_in_8e + .int port_in_8f + .int port_in_90 + .int port_in_91 + .int port_in_92 + .int port_in_93 + .int port_in_94 + .int port_in_95 + .int port_in_96 + .int port_in_97 + .int port_in_98 + .int port_in_99 + .int port_in_9a + .int port_in_9b + .int port_in_9c + .int port_in_9d + .int port_in_9e + .int port_in_9f + .int port_in_a0 + .int port_in_a1 + .int port_in_a2 + .int port_in_a3 + .int port_in_a4 + .int port_in_a5 + .int port_in_a6 + .int port_in_a7 + .int port_in_a8 + .int port_in_a9 + .int port_in_aa + .int port_in_ab + .int port_in_ac + .int port_in_ad + .int port_in_ae + .int port_in_af + .int port_in_b0 + .int port_in_b1 + .int port_in_b2 + .int port_in_b3 + .int port_in_b4 + .int port_in_b5 + .int port_in_b6 + .int port_in_b7 + .int port_in_b8 + .int port_in_b9 + .int port_in_ba + .int port_in_bb + .int port_in_bc + .int port_in_bd + .int port_in_be + .int port_in_bf + .int port_in_c0 + .int port_in_c1 + .int port_in_c2 + .int port_in_c3 + .int port_in_c4 + .int port_in_c5 + .int port_in_c6 + .int port_in_c7 + .int port_in_c8 + .int port_in_c9 + .int port_in_ca + .int port_in_cb + .int port_in_cc + .int port_in_cd + .int port_in_ce + .int port_in_cf + .int port_in_d0 + .int port_in_d1 + .int port_in_d2 + .int port_in_d3 + .int port_in_d4 + .int port_in_d5 + .int port_in_d6 + .int port_in_d7 + .int port_in_d8 + .int port_in_d9 + .int port_in_da + .int port_in_db + .int port_in_dc + .int port_in_dd + .int port_in_de + .int port_in_df + .int port_in_e0 + .int port_in_e1 + .int port_in_e2 + .int port_in_e3 + .int port_in_e4 + .int port_in_e5 + .int port_in_e6 + .int port_in_e7 + .int port_in_e8 + .int port_in_e9 + .int port_in_ea + .int port_in_eb + .int port_in_ec + .int port_in_ed + .int port_in_ee + .int port_in_ef + .int port_in_f0 + .int port_in_f1 + .int port_in_f2 + .int port_in_f3 + .int port_in_f4 + .int port_in_f5 + .int port_in_f6 + .int port_in_f7 + .int port_in_f8 + .int port_in_f9 + .int port_in_fa + .int port_in_fb + .int port_in_fc + .int port_in_fd + .int port_in_fe + .int port_in_ff + +port_out: + andi.w #$ff,d0 + ;; This is the fastest way to shift left 2 bits. :S + add.w d0,d0 + add.w d0,d0 + movea.l lut_ports_out(pc,d0.w),a0 + jmp (a0) + +lut_ports_out: + .int port_out_00 + .int port_out_01 + .int port_out_02 + .int port_out_03 + .int port_out_04 + .int port_out_05 + .int port_out_06 + .int port_out_07 + .int port_out_08 + .int port_out_09 + .int port_out_0a + .int port_out_0b + .int port_out_0c + .int port_out_0d + .int port_out_0e + .int port_out_0f + .int port_out_10 + .int port_out_11 + .int port_out_12 + .int port_out_13 + .int port_out_14 + .int port_out_15 + .int port_out_16 + .int port_out_17 + .int port_out_18 + .int port_out_19 + .int port_out_1a + .int port_out_1b + .int port_out_1c + .int port_out_1d + .int port_out_1e + .int port_out_1f + .int port_out_20 + .int port_out_21 + .int port_out_22 + .int port_out_23 + .int port_out_24 + .int port_out_25 + .int port_out_26 + .int port_out_27 + .int port_out_28 + .int port_out_29 + .int port_out_2a + .int port_out_2b + .int port_out_2c + .int port_out_2d + .int port_out_2e + .int port_out_2f + .int port_out_30 + .int port_out_31 + .int port_out_32 + .int port_out_33 + .int port_out_34 + .int port_out_35 + .int port_out_36 + .int port_out_37 + .int port_out_38 + .int port_out_39 + .int port_out_3a + .int port_out_3b + .int port_out_3c + .int port_out_3d + .int port_out_3e + .int port_out_3f + .int port_out_40 + .int port_out_41 + .int port_out_42 + .int port_out_43 + .int port_out_44 + .int port_out_45 + .int port_out_46 + .int port_out_47 + .int port_out_48 + .int port_out_49 + .int port_out_4a + .int port_out_4b + .int port_out_4c + .int port_out_4d + .int port_out_4e + .int port_out_4f + .int port_out_50 + .int port_out_51 + .int port_out_52 + .int port_out_53 + .int port_out_54 + .int port_out_55 + .int port_out_56 + .int port_out_57 + .int port_out_58 + .int port_out_59 + .int port_out_5a + .int port_out_5b + .int port_out_5c + .int port_out_5d + .int port_out_5e + .int port_out_5f + .int port_out_60 + .int port_out_61 + .int port_out_62 + .int port_out_63 + .int port_out_64 + .int port_out_65 + .int port_out_66 + .int port_out_67 + .int port_out_68 + .int port_out_69 + .int port_out_6a + .int port_out_6b + .int port_out_6c + .int port_out_6d + .int port_out_6e + .int port_out_6f + .int port_out_70 + .int port_out_71 + .int port_out_72 + .int port_out_73 + .int port_out_74 + .int port_out_75 + .int port_out_76 + .int port_out_77 + .int port_out_78 + .int port_out_79 + .int port_out_7a + .int port_out_7b + .int port_out_7c + .int port_out_7d + .int port_out_7e + .int port_out_7f + .int port_out_80 + .int port_out_81 + .int port_out_82 + .int port_out_83 + .int port_out_84 + .int port_out_85 + .int port_out_86 + .int port_out_87 + .int port_out_88 + .int port_out_89 + .int port_out_8a + .int port_out_8b + .int port_out_8c + .int port_out_8d + .int port_out_8e + .int port_out_8f + .int port_out_90 + .int port_out_91 + .int port_out_92 + .int port_out_93 + .int port_out_94 + .int port_out_95 + .int port_out_96 + .int port_out_97 + .int port_out_98 + .int port_out_99 + .int port_out_9a + .int port_out_9b + .int port_out_9c + .int port_out_9d + .int port_out_9e + .int port_out_9f + .int port_out_a0 + .int port_out_a1 + .int port_out_a2 + .int port_out_a3 + .int port_out_a4 + .int port_out_a5 + .int port_out_a6 + .int port_out_a7 + .int port_out_a8 + .int port_out_a9 + .int port_out_aa + .int port_out_ab + .int port_out_ac + .int port_out_ad + .int port_out_ae + .int port_out_af + .int port_out_b0 + .int port_out_b1 + .int port_out_b2 + .int port_out_b3 + .int port_out_b4 + .int port_out_b5 + .int port_out_b6 + .int port_out_b7 + .int port_out_b8 + .int port_out_b9 + .int port_out_ba + .int port_out_bb + .int port_out_bc + .int port_out_bd + .int port_out_be + .int port_out_bf + .int port_out_c0 + .int port_out_c1 + .int port_out_c2 + .int port_out_c3 + .int port_out_c4 + .int port_out_c5 + .int port_out_c6 + .int port_out_c7 + .int port_out_c8 + .int port_out_c9 + .int port_out_ca + .int port_out_cb + .int port_out_cc + .int port_out_cd + .int port_out_ce + .int port_out_cf + .int port_out_d0 + .int port_out_d1 + .int port_out_d2 + .int port_out_d3 + .int port_out_d4 + .int port_out_d5 + .int port_out_d6 + .int port_out_d7 + .int port_out_d8 + .int port_out_d9 + .int port_out_da + .int port_out_db + .int port_out_dc + .int port_out_dd + .int port_out_de + .int port_out_df + .int port_out_e0 + .int port_out_e1 + .int port_out_e2 + .int port_out_e3 + .int port_out_e4 + .int port_out_e5 + .int port_out_e6 + .int port_out_e7 + .int port_out_e8 + .int port_out_e9 + .int port_out_ea + .int port_out_eb + .int port_out_ec + .int port_out_ed + .int port_out_ee + .int port_out_ef + .int port_out_f0 + .int port_out_f1 + .int port_out_f2 + .int port_out_f3 + .int port_out_f4 + .int port_out_f5 + .int port_out_f6 + .int port_out_f7 + .int port_out_f8 + .int port_out_f9 + .int port_out_fa + .int port_out_fb + .int port_out_fc + .int port_out_fd + .int port_out_fe + .int port_out_ff + +port_in_00: +port_out_00: + ;; Temporary test harness. Writing to this port writes a + ;; character to the screen. + SAVEREG + andi.w #$ff,d1 + move.w d1,-(sp) + jsr char_draw + addq #2,sp + RESTREG + rts + +port_in_01: +port_out_01: +port_in_02: +port_out_02: +port_in_03: +port_out_03: +port_in_04: +port_out_04: + ;; Bank B paging, among other things + SAVEREG + move.b d1,-(a7) + jsr bankswap_b_write + addq #2,a7 + RESTREG + rts + +port_in_05: +port_out_05: +port_in_06: +port_out_06: + ;; Bank A paging + SAVEREG + move.b d1,-(a7) + jsr bankswap_a_write + addq #2,a7 + RESTREG + rts + +port_in_07: +port_out_07: +port_in_08: +port_out_08: +port_in_09: +port_out_09: +port_in_0a: +port_out_0a: +port_in_0b: +port_out_0b: +port_in_0c: +port_out_0c: +port_in_0d: +port_out_0d: +port_in_0e: +port_out_0e: +port_in_0f: +port_out_0f: +port_in_10: +.xref video_row +.xref video_increment +.xref video_enabled +.xref video_6bit +.xref video_busy +.xref video_cur_row +.xref video_cur_col +.xref video_write +.xref video_read + + ;; LCD status + clr.b d1 + or.b video_increment,d1 + or.b video_row,d1 + or.b video_enabled,d1 + or.b video_6bit,d1 + or.b video_busy,d1 + rts + +port_out_10: + ;; LCD command + tst.b d1 + beq port_out_10_00 + subq.b #1,d1 + beq port_out_10_01 + subq.b #1,d1 + beq port_out_10_02 + subq.b #1,d1 + beq port_out_10_03 + subq.b #1,d1 + beq port_out_10_04 + subq.b #1,d1 + beq port_out_10_05 + subq.b #1,d1 + beq port_out_10_06 + subq.b #1,d1 + beq port_out_10_07 + addq.b #7,d1 + cmpi.b #$0b,d1 ; power supply enhancement + ble port_out_10_undef + cmpi.b #$13,d1 ; power supply level + ble port_out_10_undef + cmpi.b #$17,d1 ; undefined + ble port_out_10_undef + cmpi.b #$18,d1 ; cancel test mode + beq port_out_10_undef + cmpi.b #$1b,d1 ; undefined + beq port_out_10_undef + cmpi.b #$1f,d1 ; enter test mode + ble port_out_10_undef + cmpi.b #$3f,d1 ; set column + ble port_out_10_set_col + cmpi.b #$7f,d1 ; z-addressing + ble port_out_10_undef ; XXX? + cmpi.b #$df,d1 ; set row + ble port_out_10_set_row + ;; fallthrough: set contrast (unimplemented) + rts + ;; ... +port_out_10_00: ; 6-bit mode + move.b #$00,video_6bit + rts +port_out_10_01: ; 8-bit mode + move.b #$40,video_6bit + rts +port_out_10_02: ; screen off + move.b #$20,video_enabled + rts +port_out_10_03: ; screen on + move.b #$00,video_enabled + rts +port_out_10_04: ; x-- + move.b #$01,video_row + move.b #$00,video_increment + rts +port_out_10_05: ; x++ + move.b #$01,video_row + move.b #$02,video_increment + rts +port_out_10_06: ; y-- + move.b #$00,video_row + move.b #$00,video_increment + rts +port_out_10_07: ; y++ + move.b #$00,video_row + move.b #$02,video_increment + rts +port_out_10_undef: + rts +port_out_10_set_col: + sub.b #$20,d1 + move.b d1,video_cur_col + rts +port_out_10_set_row: + sub.b #$80,d1 + move.b d1,video_cur_row + rts + + +port_in_11: + ;; LCD data + SAVEREG + jsr video_read + move.b d0,d1 ; return value + RESTREG + rts + +port_out_11: + ;; LCD data + SAVEREG + move.b d1,-(a7) + jsr video_write + addq #2,a7 + RESTREG + rts + +port_in_12: +port_out_12: +port_in_13: +port_out_13: +port_in_14: +port_out_14: +port_in_15: +port_out_15: +port_in_16: +port_out_16: +port_in_17: +port_out_17: +port_in_18: +port_out_18: +port_in_19: +port_out_19: +port_in_1a: +port_out_1a: +port_in_1b: +port_out_1b: +port_in_1c: +port_out_1c: +port_in_1d: +port_out_1d: +port_in_1e: +port_out_1e: +port_in_1f: +port_out_1f: +port_in_20: +port_out_20: +port_in_21: +port_out_21: +port_in_22: +port_out_22: +port_in_23: +port_out_23: +port_in_24: +port_out_24: +port_in_25: +port_out_25: +port_in_26: +port_out_26: +port_in_27: +port_out_27: +port_in_28: +port_out_28: +port_in_29: +port_out_29: +port_in_2a: +port_out_2a: +port_in_2b: +port_out_2b: +port_in_2c: +port_out_2c: +port_in_2d: +port_out_2d: +port_in_2e: +port_out_2e: +port_in_2f: +port_out_2f: +port_in_30: +port_out_30: +port_in_31: +port_out_31: +port_in_32: +port_out_32: +port_in_33: +port_out_33: +port_in_34: +port_out_34: +port_in_35: +port_out_35: +port_in_36: +port_out_36: +port_in_37: +port_out_37: +port_in_38: +port_out_38: +port_in_39: +port_out_39: +port_in_3a: +port_out_3a: +port_in_3b: +port_out_3b: +port_in_3c: +port_out_3c: +port_in_3d: +port_out_3d: +port_in_3e: +port_out_3e: +port_in_3f: +port_out_3f: +port_in_40: +port_out_40: +port_in_41: +port_out_41: +port_in_42: +port_out_42: +port_in_43: +port_out_43: +port_in_44: +port_out_44: +port_in_45: +port_out_45: +port_in_46: +port_out_46: +port_in_47: +port_out_47: +port_in_48: +port_out_48: +port_in_49: +port_out_49: +port_in_4a: +port_out_4a: +port_in_4b: +port_out_4b: +port_in_4c: +port_out_4c: +port_in_4d: +port_out_4d: +port_in_4e: +port_out_4e: +port_in_4f: +port_out_4f: +port_in_50: +port_out_50: +port_in_51: +port_out_51: +port_in_52: +port_out_52: +port_in_53: +port_out_53: +port_in_54: +port_out_54: +port_in_55: +port_out_55: +port_in_56: +port_out_56: +port_in_57: +port_out_57: +port_in_58: +port_out_58: +port_in_59: +port_out_59: +port_in_5a: +port_out_5a: +port_in_5b: +port_out_5b: +port_in_5c: +port_out_5c: +port_in_5d: +port_out_5d: +port_in_5e: +port_out_5e: +port_in_5f: +port_out_5f: +port_in_60: +port_out_60: +port_in_61: +port_out_61: +port_in_62: +port_out_62: +port_in_63: +port_out_63: +port_in_64: +port_out_64: +port_in_65: +port_out_65: +port_in_66: +port_out_66: +port_in_67: +port_out_67: +port_in_68: +port_out_68: +port_in_69: +port_out_69: +port_in_6a: +port_out_6a: +port_in_6b: +port_out_6b: +port_in_6c: +port_out_6c: +port_in_6d: +port_out_6d: +port_in_6e: +port_out_6e: +port_in_6f: +port_out_6f: +port_in_70: +port_out_70: +port_in_71: +port_out_71: +port_in_72: +port_out_72: +port_in_73: +port_out_73: +port_in_74: +port_out_74: +port_in_75: +port_out_75: +port_in_76: +port_out_76: +port_in_77: +port_out_77: +port_in_78: +port_out_78: +port_in_79: +port_out_79: +port_in_7a: +port_out_7a: +port_in_7b: +port_out_7b: +port_in_7c: +port_out_7c: +port_in_7d: +port_out_7d: +port_in_7e: +port_out_7e: +port_in_7f: +port_out_7f: +port_in_80: +port_out_80: 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