RCA CDP18S711 manual Appendix C - CHIP-8Interpreter, CHIP-8Interpreter Listing

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Appendix C - CHIP-8 Interpreter

CHIP-8 Interpreter Listing

To use the CHIP-8 language you must first load the following interpreter program into memory

locations 0000-0IFF (2 pages). This interpreter will allow you to run the games in Appendix D or write your own programs using the CHIP-8 instruction set described in section III.

0000	91	BB	FF	01	B2	B6	F8	CF	0100	00	00	00	00	00	45	A3	98
0008	A2	F8	81	B1	F8	46	Al	90	0108	56	D4	F8	81	BC	F8	95	AC
0010	B4	F8	1B	A4	F8	01	B5	F8	0110	22	DC	12	56	D4	06	B8	D4
0018	FC	A5	D4	96	B7	E2	94	BC	0118	06	A8	D4	64	0A	01	E6	8A
0020	45	AF	F6	F6	F6	F6	32	44	0120	F4	AA	3B	28	9A	FC	01	BA
0028	F9	50	AC	8F	FA	0F	F9	F0	0128	D4	F8	81	BA 06 FA 0F AA
0030	A6	05	F6	F6	F6	F6	F9	F0	0130	0A	AA	D4	E6	06	BF	93	BE
0038	A7	4C	B3	8C	FC	0F	AC	0C	0138	F8	1B	AE 2A 1A F8 00 5A
0040	A3	D3	30	1B	8F	FA	0F	B3	0140	0E	F5	3B	48	56	0A	FC	01
0048	45	30 40		22	69	12	D4	00	0148	5A	30	40	4E	F6	3B	3C	9F
0050	00	01	01	01	01	01	01	01	0150	56	2A	2A	D4	00	22	86	52
0058	01	01	01	01	01	00	01	01	0158	F8	F0	A7	07	5A	87	F3	17
0060	00	7C	75	83	88	95	B4	87	0160	1A	3A	5B	12	D4	22	86	52
0068	BC	91	EB	A4	D9	70	99	05	0168	F8	F0	A7	0A	57	87	F3	17
0070	06	FA	07	BE	06	FA	3F	F6	0170	1A	3A	6B	12	D4	15	85	22
0078	F6	F6	22	52	07	FA	1F	FE	0178	73	95	52	25	45	A5	86	FA
0080	FE	FE	F1	AC	9B	BC	45	FA	0180	0F	B5	D4	45	E6	F3	3A	82
0088	0F	AD	A7	F8	D0	A6	93	AF	0188	15	15	D4	45	E6	F3	3A	88
0090	87	32	F3	27	4A	BD	9E	AE	0190	D4	45	07	30	8C	45	07	30
0098	8E	32	A4	9D	F6	BD	8F	76	0198	84	E6	62	26	45	A3	36	88
00A0	AF	2E	30	98	9D	56	16	8F	01A0	D4	3E	88	D4	F8	F0	A7	E7
00A8	56	16	30	8E	00	EC	F8	D0	0lA8 45 F4 A5 86 FA 0F 3B B2
00B0	A6	93	A7	8D	32	D9	06	F2	01B0	FC	01	B5	D4	45	56	D4	45
00B8	2D	32	BE	F8	01	A7	46	F3	01B8	E6	F4	56	D4	45	FA	0F	3A
00C0	5C	02	FB	07	32	D2	1C	06	01C0	C4	07	56	D4	AF	22	F8	D3
00C8	F2	32	CE	F8	01	A7	06	F3	01C8	73	8F	F9	F0	52	E6	07	D2
00D0	5C	2C	16	8C	FC	08	AC	3B	01D0	56	F8	FF A6 F8 00 7E 56
00D8	B3	F8	FF	A6	87	56	12	D4	0lD8 D4 19 89 AE 93 BE 99 EE
00E0	9B	BF	F8	FF	AF	93	5F	8F	01E0	F4	56	76	E6	F4	B9	56	45
00E8	32	DF	2F	30	E5	00	42	B5	01E8	F2	56	D4	45	AA	86	FA	0F
00F0	42	A5	D4	8D	A7	87	32	AC	01F0	BA	D4	00	00	00	00	00	00
00F8	2A	27	30	F5	00	00	00	00	01F8	00	00	00	00	00	E0	00	4B
<e0m>									<eom>

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Contents Page RCA COSMAC VIP CDP18S711 Instruction Manual VIP-311ACKNOWLEDGMENT Contents Contents Continued 1. Getting Started What This Manual CoversThe Power Supply Turning It On What You See1. Getting Started 11.COSMAC VIP Operation Using the Operating SystemMemory Write Tape Write Memory ReadTape Read Testing Your Cassette System 11.COSMAC VIP OperationIII.CHIP-8Language Programming How to Change and Use the VariablesBranch Instructions Using the Display Instructions 0206 D125 SHOW 5MI@VlV2 0208 1208 GO 020A F090 III. CHIP-8 Language Programming0200 A20A I=020A 0202 6100 V1=00 0204 6200 V2=00 020C F090 020E F000Applying CHIP-8 Some Program Ideas 111. CHIP-8Language Programming25.PROGRAMMED SPOT - Introduce children to programming concepts by letting them preprogram the movements of a spot or object on the screen IV. Machine Language Programming VIP Machine CodingMachine Language Programming Summed Up How Memory Is Addressed V. Logic DescriptionHow the Input/Output Works pressed. A 62 machine instruction causes the least significant 4 bits of memory byte to be latched into U13. These 4 bits are decoded to bring one of the 16 U13 output lines low. If the key that corresponds to this output line is pressed, the CDPI802 EF3 input will go low. The 4-bitcodes latched into U13 correspond to the equivalent key positions. After the program send8 a 4-bitcode to U13, it subsequently examines the EF3 line to see if the key corresponding to this code is pressed or not. In this manner, a program can determine when any specific key is pressed or can sequentially scan all keys while waiting for any one to be pressed. Key debounce delays must be provided in the program when required. A program can also cause a speaker tone to occur when a key is pressed. Only one key at a time should be pressed with this method of interfacing the keyboard Using the Byte Input/Output V1. Expansion Considerations and ConnectionsSome Expansion Ideas Using the Expansion InterfaceI RCA COSMAC VIP Instruction Manual V1. Expansion Considerations and Connections Pin SignalTable III - External Option Terminal Connections 2.Composing poetry or pictures with printer output Signal Tracing VIL Troubleshooting HintsOther Problems No SoundLast Resorts Byte Pattern for Displaying COSMAC Appendix A - Test and Operating DataBeeper Program Signals Cassette Attachment Diagram Cassette Phase TestTest Program Cassette Data Test Cassette Recording Guidelines Memory Test ProgramAppendix B - Operating System Operating System ListingOperating System Summary Operating System Register TableR3 = Machine Language Subroutine Program Counter Appendix C - CHIP-8Interpreter CHIP-8Interpreter ListingCDP1802 Register Use for CHIP-8 CHIP-8Memory MapInterpreter Appendix C - CHIP-8Interpreter CHIP-8User Notes RCA COSMAC VIP Instruction ManualPage 1. VIP Kaleidoscope 2. VIP Video Display Drawing Game Fig. E-1Microprocessor and Display Interface Appendix E - Logic DiagramsFig. E-5Power Supply Circuit and Byte CircuitsPage Fig. E-2- ROM Circuits and Expansion Interface Appendix E - Logic DiagramsPage Fig. E-4- RAM Circuits Appendix E - Logic DiagramsRCA COSMAC VIP Instruction Manuel RCA COSMAC VIP Instruction Manual 2.Parts List for RCA COSMAC VIP CDP18S711 Board Layout, Parts List, and Expansion NotesAppendix F 1.Printed Circuit Board LayoutRCA COSMAC VIP Instruction Manual Page 2. Parts List for RCA COSMAC VIP CDP18S711 Page RCA COSMAC VIP Instruction Manual Resistors - Supplied 1 /4 W except as notedPage 3. COSMAC VIP Expansion Notes