Table 8-33: Bitblt Source Start Address Selection - Epson S1D13506 Technical Manual

Epson Research and Development
Vancouver Design Center
BitBLT Source Start Address Register 0
REG[104h]
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 7 Bit 6
BitBLT Source Start Address Register 1
REG[105h]
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 15 Bit 14
BitBLT Source Start Address Register 2
REG[106h]
n/a n/a
REG[104h] bits 7-0
REG[105h] bits 7-0
REG[106h] bits 4-0
The following table shows how Source Start Address Register is defined for 8 and 16 bpp color depths.
Color Format
BitBLT Source Start Address[20:6],
8 bpp
BitBLT Source Start Address[20:7],
16 bpp
Hardware Functional Specification
Issue Date: 02/03/26
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 5 Bit 4
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 13 Bit 12
BitBLT
Source Start
n/a
Address
Bit 20
BitBLT Source Start Address Bits [20:0]
A 21-bit register that specifies the source start address for the BitBLT operation.
If data is sourced from the CPU, then bit 0 is used for byte alignment within a 16-bit word
and the other address bits are ignored. In pattern fill operation, the BitBLT Source Start
Address is defined by the following equation:
Value programmed to the Source Start Address Register =
Pattern Base Address + Pattern Line Offset + Pixel Offset.

Table 8-33: BitBLT Source Start Address Selection

Pattern Base Address[20:0]
6'b0
7'b0
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 3 Bit 2
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 11 Bit 10
BitBLT
BitBLT
Source Start
Source Start
Address
Bit 18
Bit 19
Pattern Line Offset[2:0]
BitBLT Source Start
Address[5:3]
BitBLT Source Start
Address[6:4]
Page 165
RW
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 1 Bit 0
RW
BitBLT BitBLT
Source Start Source Start
Address Address
Bit 9 Bit 8
RW
BitBLT BitBLT
Source Start Source Start
Address Bit Address
17 Bit 16
Pixel Offset[3:0]
1'b0, BitBLT Source Start
Address[2:0]
BitBLT Source Start
Address[3:0]
S1D13506
X25B-A-001-12