Epson S1D13705 technical manual Screen 1 Start, Screen 2 Start

Epson Research and Development	Page 63
Vancouver Design Center

REG[0Ch] Screen 1 Start Address Register (LSB)
Address = 1FFECh							Read/Write
Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start
Address	Address	Address	Address	Address	Address	Address	Address
Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
REG[0Dh] Screen 1 Start Address Register (MSB)
Address = 1FFEDh							Read/Write
Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start	Screen 1 Start
Address	Address	Address	Address	Address	Address	Address	Address
Bit 15	Bit 14	Bit 13	Bit 12	Bit 11	Bit 10	Bit 9	Bit 8

REG[0Dh] bits 7-0 Screen 1 Start Address Bits [15:0]

REG[0Ch] bits 7-0 These bits determine the word address of the start of Screen 1 in Landscape modes or the byte address of the start of Screen 1 in SwivelView modes.

Note

For SwivelView mode the most significant bit (bit 16) is located in REG[10h].

REG[0Eh] Screen 2 Start Address Register (LSB)
Address = 1FFEEh							Read/Write
Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start
Address	Address	Address	Address	Address	Address	Address	Address
Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
REG[0Fh] Screen 2 Start Address Register (MSB)
Address = 1FFEFh							Read/Write
Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start	Screen 2 Start
Address	Address	Address	Address	Address	Address	Address	Address
Bit 15	Bit 14	Bit 13	Bit 12	Bit 11	Bit 10	Bit 9	Bit 8

REG[0Fh] bits 7-0 Screen 2 Start Address Bits [15:0]

REG[0Eh] bits 7-0 These bits determine the word address of the start of Screen 2 in Landscape modes only and has no effect in SwivelView modes.

REG[10h] Screen Start Address Overflow Register
Address = 1FFF0h								Read/Write
								Screen 1 Start
n/a	n/a		n/a	n/a	n/a	n/a	n/a	Address
								Bit 16
bit 0		Screen 1 Start Address Bit 16
		This bit is the most significant bit of Screen 1 Start Address for SwivelView mode. This
		bit has no effect in Landscape mode.

Hardware Functional Specification	S1D13705
Issue Date: 02/02/01	X27A-A-001-10