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annotate simple_console.txt @ 0:7e44f7d5810b

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Initial commit. CPU working well enough for simple hello world program.
author Michael Pavone <pavone@retrodev.com>
date Tue, 22 Mar 2016 22:44:02 -0700
parents
children 6204c81e2933
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7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
Michael Pavone <pavone@retrodev.com>
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1 Key:
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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2 1 = literal 1 bit
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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3 0 = literal 0 bit
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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4 O = opcode bit
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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5 D = destination register bit
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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6 A = source A register bit
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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7 B = source B register bit
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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8
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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9 DDDD AAAA BBBB OOOO
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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10
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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11 0: ldim
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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12 D = destination reg
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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13 A and B form 8-bit immediate value
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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14 1: ldimh
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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15 D = destination reg
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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16 A and B form 8-bit immediate value
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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17 2: ld8
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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18 3: ld16
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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19 4: str8
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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20 5: str16
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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21 6: add
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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22 7: adc
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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23 8: and
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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24 9: or
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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25 A: xor
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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26 B: lsl
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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27 C: lsr
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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28 D: asr
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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29 E: bcc
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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30 F: single source
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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31
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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32
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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33
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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34 DDDD AAAA OOOO 1111
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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35
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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36 single source
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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37
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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38 0: mov
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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39 1: neg
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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40 2: not
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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41 3: cmp
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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42 4: call
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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43 A = register containing pointer to function
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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44 D = register that will store PC value
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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45 5: swap
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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46 6: in
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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47 7: out
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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48 8: ini
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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49 9: outi
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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50 A: addi
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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51 B: andi
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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52 C: ori
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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53 D: ls[lr]i
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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54 MSB of AAAA determines direction
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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55 LS 3 bits determines magnitude
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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56 E: asri
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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57 F: single reg
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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58
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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59
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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60 DDDD OOOO 1111 1111
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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61
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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62 0: reti - return from interrupt, D = register to restore from uer
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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63 1: trap
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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64 2: trapi
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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65 3: getepc
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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66 4: setepc
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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67 5: getesr
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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68 6: setesr
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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69 7: getenum
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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70 8: setenum
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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71 9: getuer
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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72 A: setuer
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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73 B: getenum
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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74 C: setenum
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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75 E: invalid
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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76 F: invalid
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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77
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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78
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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79 Registers:
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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80
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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81 r0 - r12 : general purpose
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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82 r13 : technically general purpose, but canonically the stack register
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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83 r14 : PC
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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84 r15 : status register
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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85
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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86 IO: Ports
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87
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88 0: Controller 1
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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89 1: Controller 2
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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90 2: Controller 3
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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91 3: Controller 4
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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92
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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93 4: Channel A Freq
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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94 Load value for a 16-bit down-counter
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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95 Polarity of output is switched on transition from 1 to 0
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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96 Value is loaded on cycles where counter is 0
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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97 Special case value of 0 in this register forces polarity to positive
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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98 5: Channel B Freq
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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99 6: Channel C Freq
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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100 7: Channel D Freq
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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101
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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102 8: Channel A/B Vol
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103 9: Channel C/D Vol
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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104
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105 A: Timer Freq
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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106 B: "Serial" Debug Port
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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107
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108 D: Write Pallette Address : Read Vertical Position
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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109 E: Write Name Table Address : Read Horizontal Position
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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110 F: Write Sprite Table Address : Read Status?
7e44f7d5810b Initial commit. CPU working well enough for simple hello world program.
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111
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112
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113
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