RCA CDP18S711 manual Appendix B - Operating System, Operating System Listing

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Appendix B - Operating System

Operating System Listing

The following shows the machine language code for the ROM operating system. ROM is addressed at

8000-81FF. This listing can be used to verify the contents of the ROM if required.

8000	F8	80	B2	F8	08	A2	E2	D2	8100	30	39	22	2A	3E	20	24	34
8008	64	00	62	0C	F8	FF	Al	F8	8108	26	28	2E	18	14	1C	10	12
8010	0F	B1	F8	AA	51	01	FB	AA	8110	F0	80	F0	80	F0	80	80	80
8018	32	22	91	FF	04	3B	22	B1	8118	F0	50	70	50	F0	50	50	50
8020	30	12	36	28	90	A0	E0	D0	8120	F0	80	F0	10	F0	80	F0	90
8028	El F8 00 73 81 FB AF							3A	8128	F0	90	F0	10	F0	10	F0	90
8030	29	F8	D2	73	F8	9F	51	81	8130	F0	90	90	90	F0	10	10	10
8038	A0	91	B0	F8	CF	Al	D0	73	8138	10	60	20	20	20	70	A0	A0
8040	20	20	40	FF	01	20	50	FB	8140	F0	20	20	7A	42	70	22	78
8048	82	3A	3E	92	B3	F8	51	A3	8148	22	52	C4	19	F8	00	A0	9B
8050	D3	90	B2	BB	BD	F8	81	BI	8150	B0	E2	E2	80	E2	E2	20	A0
8058	B4	B5	B7	BA	BC	F8	46	Al	8158	E2	20	A0	E2	20	A0	3C	53
8060	F8	AF A2 F8 DD A4 F8						C6	8160	98	32	67	AB	2B	8B	B8	88
8068	A5	F8	BA A7 F8 Al AC					E2	8168	32	43	7B	28	30	44	D3	F8
8070	69	DC D7 D7 D7 B6 D7						D7	8170	0A	3B	76	F8	20	17	7B	BF
8078	D7	A6	D4	DC	BE	32	F4	FB	8178	FF 01 3A 78 39					6E	7A	9F
8080	0A	32	EF DC AE 22 61					9E	8180	30	78	D3	F8	10	3D	85	3D
8088	FB 0B 32 C2 9E FB 0F							3A	8188	8F	FF	01	3A	87	17	9C	FE
8090	8F	F8	6F	AC	F8	40	B9	93	8190	35	90	30	82	D3	E2	9C	AF
8098	F6	DC 29 99 3A 97 F8						10	8198	2F	22	8F	52	62	E2	E2	3E
80A0	A7	F8	08	A9	46	B7	93	FE	81A0	98	F8	04	A8	88	3A	A4	F8
80A8	DC 86 3A AD 2E 97 F6							B7	81A8	04	A8	36	A7	88	31	AA	8F
80B0	DC 29 89 3A AD 17 87							F6	81B0	FA 0F 52 30 94					00	00	00
80B8	DC BE 3A 9E DC 69 26							D4	81B8	00	D3	DC	FE	FE	FE	FE	AE
80C0	30	C0	F8	83	AC	F8	0A	B9	81C0	DC BE F1 30 B9					D4	AA	0A
80C8	DC 33 C5 29 99 3A C8							DC	81C8	AA F8 05 AF 4A					5D	8D	FC
80D0	3B	CF F8 09 A9 A7 97						76	81D0	08	AD	2F	8F	3A	CC	8D	FC
80D8	B7	29	DC 89 3A D6 87					F6	81D8	D9	AD	30	C5	D3	22	06	73
80E0	33	E3	7B	97	56	16	86	3A	81E0	86	73	96	52	F8	06	AE	F8
80E8	CF 2E BE 3A CF 30 BD							DC	81E8	D8	AD	02	F6	F6	F6	F6	D5
80F0	16	D4	30	EF	D7	D7	D7	56	81F0	42	FA	0F	D5	BE	F6	AE	32
80F8	D4	16	30	F4	00	00	00	00	81F8	DC	3B	EA	1D	1D	30	EA	01
<eom>									<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 1. Getting Started What You SeeTurning It On Memory Write Using the Operating System11.COSMAC VIP Operation Tape Read Memory ReadTape Write Testing Your Cassette System 11.COSMAC VIP OperationBranch Instructions How to Change and Use the VariablesIII.CHIP-8Language Programming Using the Display Instructions III. CHIP-8 Language Programming 0200 A20A I=020A 0202 6100 V1=00 0204 6200 V2=000206 D125 SHOW 5MI@VlV2 0208 1208 GO 020A F090 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 the Input/Output Works V. Logic DescriptionHow Memory Is Addressed 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 ConnectionsI RCA COSMAC VIP Instruction Manual Using the Expansion InterfaceSome Expansion Ideas Table III - External Option Terminal Connections Pin SignalV1. Expansion Considerations and Connections 2.Composing poetry or pictures with printer output VIL Troubleshooting Hints Other ProblemsSignal Tracing No SoundLast Resorts Beeper Program Appendix A - Test and Operating DataByte Pattern for Displaying COSMAC Test Program Cassette Attachment Diagram Cassette Phase TestSignals Cassette Data Test Cassette Recording Guidelines Memory Test ProgramAppendix B - Operating System Operating System ListingR3 = Machine Language Subroutine Program Counter Operating System Register TableOperating System Summary Appendix C - CHIP-8Interpreter CHIP-8Interpreter ListingInterpreter CHIP-8Memory MapCDP1802 Register Use for CHIP-8 Appendix C - CHIP-8Interpreter CHIP-8User Notes RCA COSMAC VIP Instruction ManualPage 1. VIP Kaleidoscope 2. VIP Video Display Drawing Game Appendix E - Logic Diagrams Fig. E-5Power Supply Circuit and ByteFig. E-1Microprocessor and Display Interface 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 Board Layout, Parts List, and Expansion Notes Appendix F2.Parts List for RCA COSMAC VIP CDP18S711 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