The Speaker Company TTP 248M service manual Use by CPU Area Internal I/O

TTP-248M Bar Code Printer

Service Manual

0x00000000	2-Gbytes virtual space,		Area P0
	cacheable
	(write-back/write-through)
0x80000000	0.5-Gbytes fixed physical	space,	Area P1
	cacheable
	(write-back / write-through)
0xA0000000	0.5-Gbytes fixed physical	space,	Area P2
	non-cacheable
0xC0000000	0.5-Gbytes virtual space,		Area P3
	cacheable
	(write-back / write-through)
0xE0000000	0.5-Gbytes control space,		Area P4
	non-cacheable
	Table 1.

Cacheable address use Area P1 (0x80000000 ~ 0x9FFFFFFF) Non-cacheable address use Area P2 (0xA0000000 ~ 0xBFFFFFFF) Program Area use Area P1.

Hardware Area use Area P2.

P1 and P2 is same area, just P1 is cacheable and P2 is non-cacheable.

Area P2

0xA0000000	Flash 1 (Main board U25), Size 1M bytes	Area 0(/CS0)
	(Firmware Program)
0xA0100000	Flash 2 (Main board U26), Size 1M bytes
0xA0200000	Flash 3 (Main board U23), Size 1M bytes
0xA0300000	Flash 4 (Main board U24), Size 1M bytes
0xA0400000	Flash 5 (Memory Card U1), Size 1M bytes
0xA0500000	Flash 6 (Memory Card U2), Size 1M bytes
0xA0600000	Flash 7 (Memory Card U3), Size 1M bytes
0xA0700000	Flash 8 (Memory Card U4), Size 1M bytes
0xA0800000	Flash 9 (Memory Card U5), Size 1M bytes
0xA0900000	Flash 10 (Memory Card U6), Size 1M bytes
0xA0A00000	Flash 11(Memory Card U7), Size 1M bytes
0xA0B00000	Flash 12 (Memory Card U8), Size 1M bytes
0xA0C00000	N/C
0xA3FFFFFF
0xA0C00000	Use by CPU	Area 1
		(Internal I/O)
0xA3FFFFFF
0xA8000000	N/C	Area 2
		(External I/O)

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