Epson S1D13506 Technical Manual page 299

Epson Research and Development
Vancouver Design Center
Color Format
BitBLT Source Start Address[20:6],
8 bpp
BitBLT Source Start Address[20:7],
16 bpp
REG[108h] BitBLT Destination Start Address Register 0
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 7 Bit 6
REG[109h] BitBLT Destination Start Address Register 1
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 15 Bit 14
REG[10Ah] BitBLT Destination Start Address Register 2
n/a n/a
Programming Notes and Examples
Issue Date: 02/03/21
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:
Source Start Address Register = Pattern Base Address + Pattern Line Offset + Pixel Offset.
The following table shows how Source Start Address Register is defined for 8 and 16 bpp
color depths:
Table 10-3: BitBLT Source Start Address Selection
Pattern Base Address[20:0]
6'b0
7'b0
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 5 Bit 4
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 13 Bit 12
BitBLT
Destination
n/a
Start Address
Bit 20
The BitBLT Destination Start Address Registers form a 21-bit register that specifies the
destination start address for the BitBLT operation selected by the BitBLT Operation
Register (REG[103h]). The destination address represents the upper left corner of the
BitBLT rectangle (lower right corner of the BitBLT rectangle for Move Blit in Negative
Direction)
.
Pattern Line Offset[2:0]
BitBLT Source Start
Address[5:3]
BitBLT Source Start
Address[6:4]
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 3 Bit 2
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 11 Bit 10
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 19 Bit 18
Page 65
Pixel Offset[3:0]
1'b0, BitBLT Source Start
Address[2:0]
BitBLT Source Start
Address[3:0]
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 1 Bit 0
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 9 Bit 8
BitBLT BitBLT
Destination Destination
Start Address Start Address
Bit 17 Bit 16
S1D13506
X25B-G-003-04