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发表于 2014-10-30 15:43:36
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本帖最后由 翌阳 于 2014-10-30 15:51 编辑
别担心那数据,网上有,可以搞到。我是先下载留着了,电池没电那天再换电池,写数据,扩扩频玩。
- What follows is a hexdump of the RAM contents, under these conditions:
- • VFO A = 0100.0 AM
- • VFO B = 0100.0 AM
- • All memories cleared
- 000: 0 0 F 1 F F 1 F F 0 0 2 F F F F 200: F F F F F F F F F F F F F F F F
- 010: 0 0 0 B 5 9 6 8 6 8 0 0 0 3 2 0 210: F F F F F F F F F F F F F F F F
- 020: 0 5 9 3 0 0 0 5 0 0 0 0 0 0 0 0 220: F F F F F F F F F F F F F F F F
- 030: 0 1 0 0 0 0 0 0 3 0 0 0 3 0 0 0 230: F F F F F F F F F F F F F F F F
- 040: 1 0 0 0 0 0 0 0 3 0 0 F F F F F 240: F F F F F F F F F F F F F F F F
- 050: F F F F F F F F F F F F F F F F 250: F F F F F F F F F F F F F F F F
- 060: F F F F F F F F F F F F F F F F 260: F F F F F F F F F F F F F F F F
- 070: F F F F F F F F F F F F F F F F 270: F F F F F F F F F F F F F F F F
- 080: F F F F F F F F F F F F F F F F 280: F F F F F F F F F F F F F F F F
- 090: F F F F F F F F F F F F F F F F 290: F F F F F F F F F F F F F F F F
- 0A0: F F F F F F F F F F F F F F F F 2A0: F F F F F F F F F F F F F F F F
- 0B0: F F F F F F F F F F F F F F F F 2B0: F F F F F F F F F F F F F F F F
- 0C0: F F F F F F F F F F F F F F F F 2C0: F F F F F F F F F F F F F F F F
- 0D0: F F F F F F F F F F F F F F F F 2D0: F F F F F F F F F F F F F F F F
- 0E0: F F F F F F F F F F F F F F F F 2E0: F F F F F F F F F F F F F F F F
- 0F0: F F F F F F F F F F F F F F F F 2F0: F F F F F F F F F F F F F F F F
- 100: F F F F F F F F F F F F F F F F 300: F F F F F F F F F F F F F F F F
- 110: F F 0 0 0 F 1 0 0 0 0 0 0 0 0 0 310: F F F F F F F F F F F F F F F F
- 120: 0 0 0 0 0 1 7 0 0 0 0 0 0 0 0 0 320: F F F F F F F F F F F F F F F F
- 130: 0 0 2 0 5 1 0 1 0 0 0 0 0 0 0 0 330: F F F F F F F F F F F F F F F F
- 140: 0 0 0 0 2 0 5 1 0 1 0 0 0 0 F F 340: F F F F F F F F F F F F F F F F
- 150: F F F F F F F F F F F F F F F F 350: F F F F F F F F F F F F F F F F
- 160: F F F F F F F F F F F F F F F F 360: F F F F F F F F F F F F F F F F
- 170: F F F F F F F F F F F F F F F F 370: F F F F F F F F F F F F F F F F
- 180: F F F F F F F F F F F F F F F F 380: F F F F F F F F F F F F F F F F
- 190: F F F F F F F F F F F F F F F F 390: F F F F F F F F F F F F F F F F
- 1A0: F F F F F F F F F F F F F F F F 3A0: F F F F F F F F F F F F F F F F
- 1B0: F F F F F F F F F F F F F F F F 3B0: F F F F F F F F F F F F F F F F
- 1C0: F F F F F F F F F F F F F F F F 3C0: F F F F F F F F F F F F F F 0 0
- 1D0: F F F F F F F F F F F F F F F F 3D0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
- 1E0: F F F F F F F F F F F F F F F F 3E0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
- 1F0: F F F F F F F F F F F F F F F F 3F0: F F F 0 F F F F F F F F F F F F
- Notes
- • Locations 000..0FF are write protected by hardware on the RAM module. See pin *WP above.
- •Interesting locations: ◦000..0FF: Read-only data including maximum and minimum operating frequencies.
- ◦12A..13B: VFO A
- ◦13C..14D: VFO B
- ◦14E..15F: MEM 1
- ◦37C..38D: MEM 32
- •Each memory takes up 18 bytes.
- •Format of a memory entry: ? ? ? ? ? ? ? ? m f f.f f f.f f f ? ◦? = Always zero?
- ◦m = Mode (0=LSB, 1=USB, 2=AM, 3=CW, 4=RTTY, 5=FM)
- ◦f = Little-endian frequency (LSB first) An offset is added to the value of the displayed frequency, depending on the mode: LSB=0.0, AM=1.5, USB=3.0, CW=0.6, RTTY=0.6, FM=0.0 kHz.
- ◦Enough digits are available to store a frequency of up to 999 MHz, although these can't be set on the R71a by normal means.
- ◦Format of a blank entry: F F F F F F F F F F F F F F F F F F
- •The memory stores the frequency to the nearest 10Hz.
复制代码- Note that values stored in the RAM module are big-endian and that the static
- RAM IC is only 4-bits wide (nibble mode.) Some important memory addresses
- (in hex) in the RAM module for the R71A are as follows:
- 10/11 = LSB offset
- 12/13 = USB offset
- 14/15 = AM offset
- 16/17 = CW offset
- 18/19 = RTTY offset
- (FM has no offset)
- 30/31 = lowest frequency (factory is 100kHz)
- 3B/3C = highest frequency (factory 30MHz)
- Example 1 - To change the lower frequency limit to 10kHz:
- Original - 000: 00F1FF1FF002FFFF000B59686800032005930005000000000100000030003000
- Modified - 000: 00F1FF1FF002FFFF000B59686800032005930005000000001000000030003000
- Example 2 - To change the upper frequency limit to 35MHz:
- Original - 000: 00F1FF1FF002FFFF000B59686800032005930005000000000100000030003000
- Modified - 000: 00F1FF1FF002FFFF000B59686800032005930005000000000100000030053000
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