Errors in Huang text

Page #	Location	Error
Chapter 1
6	3rd line from bottom of page	decf fp_cnt,F,A should be decf lp_cnt,F,A
13	immediately above 1.5.1 heading	replace special function with file "... 0x10 refers to the file register at address 0x10."
14	Figure 1.4	figure is an approximate memory map; in particular, the access bank composition varies according to processor as explained in the 3rd paragraph on the next page
15	paragraph 3, line 3	replace PIC18F452 with PIC18F458 "... the PIC18F458 has 1536 [six banks] bytes..."
17	bottom of table	missing reference notation on last line, should be: (1) Note. This is not a physical register
22	paragraph 2, sentence 2	access bank composition varies according to the processor. For the PIC18F452, the access bank consists of lowest 128 GPRs and the highest 128 SFRs.
Chapter 2
40	section 2.4 - bad typesetting; headings are improperly spaced; many are widowed/orphaned	items in bold are headings and because of the bad typesetting could be misleading. e.g. end at the bottom of page 41 should be the heading on the following page but appears to be the 3rd line in a code snippet
43	under radix	hex, dee, or oct. should be hex, decimal, or octal.
44	Table 2.2	more useful if directives were sorted according to memory type; missing DE
44	Table 2.3	oetal_digits should be octal_digits
44	Table 2.3 - table title	MPASMD should be MPASM
44	Table 2.3	swap location of table with cblock ... endc construct
45	second cblock	double 1:2 should be double1:2
45	data directive - 1st sentence	"The data directive can also be written as da. " However, the data examples given (string, address, constant) are not consistent with the DA entry in table 2.2 which implies that DA is string only.
61	last line	ox20 should be 0x20
65	program variable convention	n1_1 and m1_1 should be n1_l and m1_l to indicate low word
66	section 2.9.1 - case 1 - if you exit out of the loop, then by definition it is not an infinite loop. Confuses case 1 and case 4.	Remove the sentence "In some applications, the user may add .... to get out of the infinite loop."
70	bottom of page and 1st paragraph of page 71	For bn -10 and bn 10: The operand for the branch instructions is actually a label. Therefore, bn 10 would branch to location 0x10 in memory and bn -10 will not compile. Use labels! Also, the '10' is hex not decimal. If 10 was an offset, the statements 'branch backward nine words' and 'branch forward 11 words' would consequently not be correct. If you really, truly wanted to use an offset, the syntax is not correct to use an offset in lieu of a label. The instructions should be bn $-10 and bn $+10 where the $ indicates the current address and is used with the offset (which is still hex) to specify a label.
75	program	Program should be rewritten for readability and efficiency. At minimum, remove the redundant code: goto replace ;no goto next_i ;yes replace movwf arr_max,A ;no, update the array max next_i incf i,F,A ;yes
Chapter 3
111	Figure 3.24 title	Diable should be Disable
Chapter 4
	TBA
Chapter 5
omit chapter from reading
Chapter 6
249	section 6.4, line 2	the number of edge triggered interrupts depends on the PIC18 model, the PIC18F452 only has 3
249	section 6.4.2	the PIC18F452 does not have PIR3, PIE3, IPR3
250	section 6.4.4, paragraph 1, last line	"because its request appears in both the high-priority and low-priority logic circuit" "because its request appears in the high-priority logic circuit"
252	Figure 6.2b, Note 2	add PIC18F452 does not have INTEDG3 or INT3IP.
252	Figure 6.2c, Notes	Note 1 is not accurate as PIC18Fxx2 includes the 452 which has an INT2. Note 2 add: PIC18F452 does not have INT3 enable and flag bits.
254	Figure 6.3b	PIC18F452 does not have a CMIF flag i.e. Note 2 from Figure Figure 6.4b should be here as well.
254	Figures 6.3c, 6.3d	PIC18F452 does not have a PIR3 register
257	Figures 6.4c, 6.4d	PIC18F452 does not have a PIE3 register
260	Figures 6.5c, 6.5d	PIC18F452 does not have a IPR3 register
263	section 6.5.5, line 2	TMROH should be TMR0H
263	section 6.5.5, line 3	TMROL should be TMR0L
263	section 6.5.5, line 5	TOCKI should be T0CKI
263	section 6.5.5, line 6	TOCON should be T0CON
263	section 6.5.6	Comparator interrupt should be Comparator interrupt (not all PIC18 devices have this interrupt)
265	Figure 6.6, title	INTO should be INT0
265	program, line 7	"retfie" after "goto int0_ISR" is not required
266	example 6.1 program, lines 2-7	replace lines 2-7 with: incf count,F ;increment count btfsc count,4 ;was count 15? clrf count ; yes, then clear count or simply with: incf count,F ; increment count
266	example 6.2 program	1. align #include with column 1; first bracket should be "<". 2. "retfie" after "goto tmr1_ISR" is not required 3. initialize TMR1H before TMR1L in mainline
267	example 6.2 program	1. ISR could be modified similar to example 6.1 shown above 2. initialize TMR1H before TMR1L in tmr1_ISR
267	example 6.2 program	program in text does not match program on CD
271	last line	service routine, The should be service routine. The
Chapter 7
277	paragraph 2, line 1	can be proceeded should be can proceed
277	section 7.3 weak	should explain memory mapped I/O vs isolated I/O [aka direct I/O or peripheral I/O]
288	paragraph 1, line 1	Example 5.3 demonstrates should be Example 6.1 demonstrates [5.3 doesn't exist; not sure if 6.1 is the correct reference?]
288	paragraph 1, line 1	Example 6.6 provides should be Example 6.3 provides [6.6 doesn't exist; not sure if 6.3 is the correct reference?]
293	paragraph 4, line 5	darken should be darker
303	last paragraph, line 1	Question on page 300 said 2 x 20 LCD display not the 4 x 20 discussed in this sentence.


	7.8 onward TBA
Chapter 8
338	Figure 8.3	pin label T13CKI should be T1CKI
345	Figure 8.7	pin label T13CKI should be T1CKI
345	Section 8.3.4	replace all references to T13CKI with T1CKI ; note this a problem in the Timer3 section of the datasheet as well
	8.4 onward TBA
Chapter 10
446	Not an error per se, but also see page 515 (bullet points)
448	Not an error per se, but also see page 516 (SSPCON1)	Look at SSPM3:SSPM0
455	Duplicate Section 10.3!	Second one should be 10.4

Chapter 11
515	Not an error per se, but also see page 446 (bullet points)
516	Not an error per se, but also see page 448 (SSPCON1)	Look at SSPM3:SSPM0

CP316: Microprocessor Systems and Interfacing

Errors in PIC Microcontroller: An Introduction to Software and Hardware Interfacing by Huang

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