18-210MB86R02 ‘Jade-D’ Hardware Manual V1.6418.11.6 Drawing mode registersWhen write to the registers, use the SetRegister command. The registers cannot be accessed fromthe CPU.MDR0 (Mode Register for miscellaneous)Registeraddress DrawBaseAddress + 420 HBit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0Bit field name FS ZP CF CY CX BSV BSHR/W R/W RW RW RW RW RW RWInitial value 00 0 00 0 0 00 00Bit 1 to 0 BSH (Bitmap Scale Horizontal)Sets horizontal zoom ratio of bitmap draw00 x101 x210 x1/201 ReservedBit 3 to 2 BSV (Bitmap Scale Vertical)Sets vertical zoom ratio of bitmap draw00 x101 x210 x1/201 ReservedBit 8 CX (Clip X enable)Sets X coordinates clipping mode0 Disabled1 EnabledBit 9 CY (Clip Y enable)Sets Y coordinates clipping mode0 Disabled1 EnabledBit 16 and 15 CF (Color Format)Sets drawing color format00 Indirect color mode (8 bits/pixel)01 Direct color mode (16 bits/pixel)Bit 20 ZP (Z Precision)Sets the precision of the Z value used for erasing hidden planes.16 bits/pixel8 bits/pixel
