CONTENTS
8.3.3. CSRFORM ........................................................................................................................................... 34
8.3.3.1. CRX ...................................................................................................................................... 34
8.3.3.2. CRY ...................................................................................................................................... 34
8.3.3.3. CM ........................................................................................................................................ 34
8.3.4. CSRDIR ............................................................................................................................................... 34
8.3.5. OVLAY ................................................................................................................................................. 35
8.3.5.1. MX0, MX1 ............................................................................................................................. 35
8.3.5.2. DM1, DM2 ............................................................................................................................ 36
8.3.5.3. OV ........................................................................................................................................ 36
8.3.6. CGRAM ADR ....................................................................................................................................... 36
8.3.7. HDOT SCR .......................................................................................................................................... 37
8.3.7.1. D0 to D2 ............................................................................................................................... 37
8.4. Drawing Control Commands ............................................................................................................................ 37
8.4.1. CSRW .................................................................................................................................................. 37
8.4.2. CSRR ................................................................................................................................................... 38
8.5. Memory Control Commands ............................................................................................................................ 38
8.5.1. MWRITE .............................................................................................................................................. 38
8.5.2 MREAD ................................................................................................................................................ 39
9. DISPLAY CONTROL FUNCTIONS ........................................................................................................................... 40
9.1. Character Configuration ................................................................................................................................... 40
9.2. Screen Configuration ....................................................................................................................................... 42
9.2.1. Screen configuration ............................................................................................................................ 42
9.2.2. Display address scanning .................................................................................................................... 42
9.2.3. Display scan timing .............................................................................................................................. 45
9.3. Cursor Control .................................................................................................................................................. 46
9.3.1. Cursor register function........................................................................................................................ 46
9.3.2. Cursor movement ................................................................................................................................ 46
9.3.3. Cursor display layers ........................................................................................................................... 46
9.4. Memory to Display Relationship ...................................................................................................................... 48
9.5. Scrolling ........................................................................................................................................................... 51
9.5.1. On-page scrolling ................................................................................................................................. 51
9.5.2. Inter-page scrolling .............................................................................................................................. 51
9.5.3. Horizontal scrolling............................................................................................................................... 52
9.5.4. Bidirectional scrolling ........................................................................................................................... 53
9.5.5. Scroll units ........................................................................................................................................... 53
10. CHARACTER GENERATOR .................................................................................................................................... 54
10.1. CG Characteristics ........................................................................................................................................... 54
10.1.1. Internal character generator................................................................................................................. 54
10.1.2. External character generator ROM ...................................................................................................... 54
10.1.3. Character generator RAM .................................................................................................................... 54
10.2. CG Memory Allocation ..................................................................................................................................... 55
10.3. Setting the Character Generator Address ........................................................................................................ 56
10.3.1. M1 = 1 .................................................................................................................................................. 56
10.3.2. CG RAM addressing example ............................................................................................................. 57
10.4. Character Codes .............................................................................................................................................. 58
11. MICROPROCESSOR INTERFACE .......................................................................................................................... 59
11.1. System Bus Interface ....................................................................................................................................... 59
11.1.1. 8080 series .......................................................................................................................................... 59
11.1.2. 6800 series .......................................................................................................................................... 59
11.2. Microprocessor Synchronization ...................................................................................................................... 59
11.2.1. Display status indication output ........................................................................................................... 59
11.2.2. Internal register access ........................................................................................................................ 59
11.2.3. Display memory access ....................................................................................................................... 59
11.3. Interface Examples .......................................................................................................................................... 61
11.3.1. Z80 to S1D13305 series interface ....................................................................................................... 61
11.3.2. 6802 to S1D13305 series interface...................................................................................................... 61
ii
EPSON
S1D13305 Series
Technical Manual
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