%!PS-Adobe-2.0
%%DocumentFonts: Courier Times-Bold
%%Title: pi.v (mpage)
%%Creator: mpage 2.5.2pre August 1999
%%CreationDate: Thu May 22 14:25:28 2003
%%Orientation: Portrait
%%DocumentMedia: Letter 612 792
%%BoundingBox: 18 18 594 774
%%Pages: (atend)
%%EndComments

%%BeginProlog

/mp_stm usertime def
/mp_pgc statusdict begin pagecount end def
statusdict begin /jobname (pi.v) def end
/reencsmalldict 12 dict def /ReEncodeSmall { reencsmalldict begin
/newcodesandnames exch def /newfontname exch def /basefontname exch def
/basefontdict basefontname findfont def /newfont basefontdict maxlength dict def
basefontdict { exch dup /FID ne { dup /Encoding eq { exch dup length array copy newfont 3 1 roll put } { exch newfont 3 1 roll put }
ifelse }
  { pop pop }
  ifelse } forall
newfont /FontName newfontname put
newcodesandnames aload pop newcodesandnames length 2 idiv
{ newfont /Encoding get 3 1 roll put } repeat
newfontname newfont definefont pop end } def
/charvec [
026 /Scaron
027 /Ydieresis
028 /Zcaron
029 /scaron
030 /trademark
031 /zcaron
032 /space
033 /exclam
034 /quotedbl
035 /numbersign
036 /dollar
037 /percent
038 /ampersand
039 /quoteright
040 /parenleft
041 /parenright
042 /asterisk
043 /plus
044 /comma
045 /minus
046 /period
047 /slash
048 /zero
049 /one
050 /two
051 /three
052 /four
053 /five
054 /six
055 /seven
056 /eight
057 /nine
058 /colon
059 /semicolon
060 /less
061 /equal
062 /greater
063 /question
064 /at
065 /A
066 /B
067 /C
068 /D
069 /E
070 /F
071 /G
072 /H
073 /I
074 /J
075 /K
076 /L
077 /M
078 /N
079 /O
080 /P
081 /Q
082 /R
083 /S
084 /T
085 /U
086 /V
087 /W
088 /X
089 /Y
090 /Z
091 /bracketleft
092 /backslash
093 /bracketright
094 /asciicircum
095 /underscore
096 /quoteleft
097 /a
098 /b
099 /c
100 /d
101 /e
102 /f
103 /g
104 /h
105 /i
106 /j
107 /k
108 /l
109 /m
110 /n
111 /o
112 /p
113 /q
114 /r
115 /s
116 /t
117 /u
118 /v
119 /w
120 /x
121 /y
122 /z
123 /braceleft
124 /bar
125 /braceright
126 /asciitilde
127 /.notdef
128 /fraction
129 /florin
130 /quotesingle
131 /quotedblleft
132 /guilsinglleft
133 /guilsinglright
134 /fi
135 /fl
136 /endash
137 /dagger
138 /daggerdbl
139 /bullet
140 /quotesinglbase
141 /quotedblbase
142 /quotedblright
143 /ellipsis
144 /dotlessi
145 /grave
146 /acute
147 /circumflex
148 /tilde
149 /oe
150 /breve
151 /dotaccent
152 /perthousand
153 /emdash
154 /ring
155 /Lslash
156 /OE
157 /hungarumlaut
158 /ogonek
159 /caron
160 /lslash
161 /exclamdown
162 /cent
163 /sterling
164 /currency
165 /yen
166 /brokenbar
167 /section
168 /dieresis
169 /copyright
170 /ordfeminine
171 /guillemotleft
172 /logicalnot
173 /hyphen
174 /registered
175 /macron
176 /degree
177 /plusminus
178 /twosuperior
179 /threesuperior
180 /acute
181 /mu
182 /paragraph
183 /periodcentered
184 /cedilla
185 /onesuperior
186 /ordmasculine
187 /guillemotright
188 /onequarter
189 /onehalf
190 /threequarters
191 /questiondown
192 /Agrave
193 /Aacute
194 /Acircumflex
195 /Atilde
196 /Adieresis
197 /Aring
198 /AE
199 /Ccedilla
200 /Egrave
201 /Eacute
202 /Ecircumflex
203 /Edieresis
204 /Igrave
205 /Iacute
206 /Icircumflex
207 /Idieresis
208 /Eth
209 /Ntilde
210 /Ograve
211 /Oacute
212 /Ocircumflex
213 /Otilde
214 /Odieresis
215 /multiply
216 /Oslash
217 /Ugrave
218 /Uacute
219 /Ucircumflex
220 /Udieresis
221 /Yacute
222 /Thorn
223 /germandbls
224 /agrave
225 /aacute
226 /acircumflex
227 /atilde
228 /adieresis
229 /aring
230 /ae
231 /ccedilla
232 /egrave
233 /eacute
234 /ecircumflex
235 /edieresis
236 /igrave
237 /iacute
238 /icircumflex
239 /idieresis
240 /eth
241 /ntilde
242 /ograve
243 /oacute
244 /ocircumflex
245 /otilde
246 /odieresis
247 /divide
248 /oslash
249 /ugrave
250 /uacute
251 /ucircumflex
252 /udieresis
253 /yacute
254 /thorn
255 /ydieresis
] def
/Courier /OurCharSet charvec ReEncodeSmall
/textfont /OurCharSet findfont 11 scalefont def
/fnamefont /Times-Bold findfont 14 scalefont def
/headerfont /Times-Bold findfont 12 scalefont def
textfont setfont
(a) stringwidth pop /mp_a_x exch def
/kanj /Ryumin-Light-H findfont 11 scalefont def
/han /Ryumin-Light.Hankaku findfont 11 scalefont def
%%EndProlog
%%Page: 1 1
save
0 setlinewidth
18 18 moveto 0 756 rlineto
576 0 rlineto 0 -756 rlineto closepath stroke
18 396 moveto 576 0 rlineto stroke
306 18 moveto 0 756 rlineto stroke
gsave
18 396 translate
0 0 moveto 0 378 rlineto 288 0 rlineto 0 -378 rlineto closepath clip
288 80 mp_a_x mul div 378 792 div scale
4 7 translate 280 288 div 784 792 div scale
textfont setfont
0 780 moveto (// pi.v v1 Frank Berndt) show
0 768 moveto (// pi top level;) show
8 mp_a_x mul 744 moveto (...) show
8 mp_a_x mul 720 moveto (// memory address;) show
8 mp_a_x mul 708 moveto (// must be 16-bit aligned for compatibility;) show
8 mp_a_x mul 696 moveto (// loaded with pio write write;) show
8 mp_a_x mul 684 moveto (// used for first dma block transfer to align;) show
8 mp_a_x mul 672 moveto (// then increments in blocks of 128 bytes;) show
8 mp_a_x mul 648 moveto (wire dma_addr_we;) show
40 mp_a_x mul 648 moveto (// write dma address;) show
8 mp_a_x mul 636 moveto (wire dma_addr_ld;) show
40 mp_a_x mul 636 moveto (// load dma address;) show
8 mp_a_x mul 624 moveto (wire dma_addr_inc;) show
40 mp_a_x mul 624 moveto (// increment dma address;) show
8 mp_a_x mul 600 moveto (assign dma_addr_we = reg_write & ra_dma_addr;) show
8 mp_a_x mul 588 moveto (assign dma_addr_ld = ~dma_conflict & dma_addr_we;) show
8 mp_a_x mul 564 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 552 moveto (begin) show
16 mp_a_x mul 540 moveto (if\(dma_addr_ld\)) show
24 mp_a_x mul 528 moveto (dma_addr <= { pio_wdata[25:1], 1'b0 };) show
16 mp_a_x mul 516 moveto (else if\(dma_addr_inc\)) show
24 mp_a_x mul 504 moveto (dma_addr <= { dma_addr[25:7] + 1, 7'd0 };) show
8 mp_a_x mul 492 moveto (end) show
8 mp_a_x mul 468 moveto (// device address;) show
8 mp_a_x mul 456 moveto (// virtual or physical address into device space;) show
8 mp_a_x mul 444 moveto (// compatibility requires 16-bit alignment;) show
8 mp_a_x mul 432 moveto (// however, bit 0 is needed for new functions;) show
8 mp_a_x mul 408 moveto (wire dev_addr_we;) show
40 mp_a_x mul 408 moveto (// write device address;) show
8 mp_a_x mul 396 moveto (wire dev_addr_ld;) show
40 mp_a_x mul 396 moveto (// load device address;) show
8 mp_a_x mul 384 moveto (wire dev_addr_inc;) show
40 mp_a_x mul 384 moveto (// increment device address;) show
8 mp_a_x mul 360 moveto (assign dev_addr_we = reg_write & ra_dev_addr;) show
8 mp_a_x mul 348 moveto (assign dev_addr_ld = ~dma_conflict & dev_addr_we;) show
8 mp_a_x mul 324 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 312 moveto (begin) show
16 mp_a_x mul 300 moveto (if\(dev_addr_ld\)) show
24 mp_a_x mul 288 moveto (dev_addr <= pio_wdata[29:0];) show
16 mp_a_x mul 276 moveto (else if\(io_write\)) show
24 mp_a_x mul 264 moveto (dev_addr <= pio_addr;) show
16 mp_a_x mul 252 moveto (else if\(dev_addr_inc\)) show
24 mp_a_x mul 240 moveto (dev_addr[29:3] <= dev_addr[29:3] + 1;) show
8 mp_a_x mul 228 moveto (end) show
8 mp_a_x mul 204 moveto (// dma length;) show
8 mp_a_x mul 192 moveto (// writing the dma length registers starts the dma;) show
8 mp_a_x mul 180 moveto (// starting a dma through PI_DMA_READ triggers error interrupt;) show
8 mp_a_x mul 168 moveto (// it is up to software to emulate the write;) show
8 mp_a_x mul 156 moveto (// one clock later, add lower addres bits for # of dw;) show
8 mp_a_x mul 144 moveto (// decremented by buffer dma for each double-word;) show
8 mp_a_x mul 132 moveto (// do not start dma when dma_len is 0, but issue done;) show
8 mp_a_x mul 108 moveto (wire dma_len_we;) show
40 mp_a_x mul 108 moveto (// write to dma length;) show
8 mp_a_x mul 96 moveto (wire dma_len_ld;) show
40 mp_a_x mul 96 moveto (// load dma_len;) show
8 mp_a_x mul 84 moveto (wire dma_proc;) show
40 mp_a_x mul 84 moveto (// start write dma process;) show
8 mp_a_x mul 72 moveto (wire dma_trap;) show
40 mp_a_x mul 72 moveto (// trap read dma;) show
8 mp_a_x mul 60 moveto (reg dma_kick;) show
40 mp_a_x mul 60 moveto (// kick dma;) show
8 mp_a_x mul 48 moveto (wire dma_len_dec;) show
40 mp_a_x mul 48 moveto (// decrement dma length;) show
8 mp_a_x mul 36 moveto (wire dma_len_nw0;) show
40 mp_a_x mul 36 moveto (// # of dw is 0;) show
8 mp_a_x mul 24 moveto (reg dma_len_zero;) show
40 mp_a_x mul 24 moveto (// dma length is 0;) show
8 mp_a_x mul 12 moveto (wire [23:0] dma_off;) show
32 mp_a_x mul 12 moveto (// lower byte offset;) show
grestore
gsave
18 18 translate
0 0 moveto 0 378 rlineto 288 0 rlineto 0 -378 rlineto closepath clip
288 80 mp_a_x mul div 378 792 div scale
4 7 translate 280 288 div 784 792 div scale
textfont setfont
8 mp_a_x mul 780 moveto (assign dma_len_we = reg_write & ra_dma_len;) show
8 mp_a_x mul 768 moveto (assign dma_len_ld = ~dma_conflict & dma_len_we;) show
8 mp_a_x mul 756 moveto (assign dma_off = { 21'd0, dma_addr[2:1], 1'b0 };) show
8 mp_a_x mul 744 moveto (assign dma_len_nw0 = \(dma_len[23:3] == 21'd0\);) show
8 mp_a_x mul 720 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 708 moveto (begin) show
16 mp_a_x mul 696 moveto (dma_kick <= dma_len_ld;) show
16 mp_a_x mul 684 moveto (if\(dma_len_ld\) begin) show
24 mp_a_x mul 672 moveto (dma_read <= ra_dma_read | ra_bread;) show
24 mp_a_x mul 660 moveto (dma_rwb <= ra_bread | ra_bwrite;) show
16 mp_a_x mul 648 moveto (end) show
16 mp_a_x mul 636 moveto (if\(dma_len_ld\)) show
24 mp_a_x mul 624 moveto (dma_len <= pio_wdata[23:0];) show
16 mp_a_x mul 612 moveto (else if\(dma_kick\)) show
24 mp_a_x mul 600 moveto (dma_len <= dma_len + dma_off;) show
16 mp_a_x mul 588 moveto (else if\(dma_len_dec\)) show
24 mp_a_x mul 576 moveto (dma_len[23:3] <= dma_len[23:3] - 1;) show
16 mp_a_x mul 564 moveto (if\(io_kick\)) show
24 mp_a_x mul 552 moveto (dma_len_zero <= 1'b0;) show
16 mp_a_x mul 540 moveto (else if\(dma_kick\)) show
24 mp_a_x mul 528 moveto (dma_len_zero <= &dma_len;) show
16 mp_a_x mul 516 moveto (else if\(dma_len_dec\)) show
24 mp_a_x mul 504 moveto (dma_len_zero <= dma_len_nw0;) show
8 mp_a_x mul 492 moveto (end) show
8 mp_a_x mul 468 moveto (....) show
8 mp_a_x mul 444 moveto (// dma burst length;) show
8 mp_a_x mul 432 moveto (// first burst aligns to 128-byte block;) show
8 mp_a_x mul 420 moveto (// a number of full 128-byte bursts may follow;) show
8 mp_a_x mul 408 moveto (// last burst moves the remaining bytes;) show
8 mp_a_x mul 384 moveto (wire bdma_ge128;) show
40 mp_a_x mul 384 moveto (// dma_len >= 128;) show
8 mp_a_x mul 372 moveto (wire [6:3] bdma_dwib;) show
32 mp_a_x mul 372 moveto (// # of dw in current burst;) show
8 mp_a_x mul 360 moveto (reg bdma_fill;) show
40 mp_a_x mul 360 moveto (// fill current burst;) show
8 mp_a_x mul 348 moveto (reg [6:0] bdma_len;) show
40 mp_a_x mul 348 moveto (// burst dma length;) show
8 mp_a_x mul 324 moveto (assign bdma_ge128 = |dma_len[23:7];) show
8 mp_a_x mul 312 moveto (assign bdma_dwib = ~dma_addr[6:3];) show
8 mp_a_x mul 288 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 276 moveto (begin) show
16 mp_a_x mul 264 moveto (bdma_fill <= bdma_ge128 | \(dma_len[6:3] > bdma_dwib\);) show
16 mp_a_x mul 252 moveto (bdma_len <= bdma_fill? { bdma_dwib, 3'b111 } : dma_len[6:0];) show
8 mp_a_x mul 240 moveto (end) show
8 mp_a_x mul 216 moveto (// request dbus dma;) show
8 mp_a_x mul 192 moveto (reg bdma_aesp;) show
40 mp_a_x mul 192 moveto (// aesp requests one burst dma;) show
8 mp_a_x mul 180 moveto (wire bdma_req;) show
40 mp_a_x mul 180 moveto (// dma burst request;) show
8 mp_a_x mul 168 moveto (wire bdma_cyc_clr;) show
40 mp_a_x mul 168 moveto (// clear bdma busy;) show
8 mp_a_x mul 156 moveto (reg bdma_cyc;) show
40 mp_a_x mul 156 moveto (// bdma busy;) show
8 mp_a_x mul 144 moveto (wire bdma_req_clr;) show
40 mp_a_x mul 144 moveto (// clear dma request;) show
8 mp_a_x mul 132 moveto (reg dma_request;) show
40 mp_a_x mul 132 moveto (// dma request;) show
8 mp_a_x mul 120 moveto (reg bdma_ack;) show
40 mp_a_x mul 120 moveto (// burst dma ack;) show
8 mp_a_x mul 108 moveto (reg bdma_ack2;) show
8 mp_a_x mul 96 moveto (reg bdma_ack3;) show
8 mp_a_x mul 72 moveto (assign bdma_cyc_clr = dma_stop | bdma_ack3;) show
8 mp_a_x mul 60 moveto (assign bdma_req_clr = dma_stop | dma_grant;) show
8 mp_a_x mul 48 moveto (assign bdma_req = dma_busy & ~dma_len_zero & ~bdma_cyc & \(bdma_aesp | bdma_busy\);) show
8 mp_a_x mul 24 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 12 moveto (begin) show
16 mp_a_x mul 0 moveto (bdma_cyc <= ~bdma_cyc_clr & \(bdma_cyc | bdma_req\);) show
grestore
gsave
306 396 translate
0 0 moveto 0 378 rlineto 288 0 rlineto 0 -378 rlineto closepath clip
288 80 mp_a_x mul div 378 792 div scale
4 7 translate 280 288 div 784 792 div scale
textfont setfont
16 mp_a_x mul 780 moveto (dma_request <= ~bdma_req_clr & \(dma_request | bdma_req\);) show
16 mp_a_x mul 768 moveto (bdma_ack <= dma_last;) show
16 mp_a_x mul 756 moveto (bdma_ack2 <= bdma_ack;) show
16 mp_a_x mul 744 moveto (bdma_ack3 <= bdma_ack2;) show
8 mp_a_x mul 732 moveto (end) show
8 mp_a_x mul 708 moveto (// burst dma control;) show
8 mp_a_x mul 684 moveto (reg bdma_dph;) show
40 mp_a_x mul 684 moveto (// burst dma phase;) show
8 mp_a_x mul 672 moveto (wire bdma_val;) show
40 mp_a_x mul 672 moveto (// burst dma data valid;) show
8 mp_a_x mul 660 moveto (reg [1:0] bdma_dval;) show
32 mp_a_x mul 660 moveto (// delayed valid;) show
8 mp_a_x mul 648 moveto (wire dbus_shr;) show
40 mp_a_x mul 648 moveto (// data right shift;) show
8 mp_a_x mul 624 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 612 moveto (begin) show
16 mp_a_x mul 600 moveto (bdma_dph <= bdma_cyc & ~dma_last & \(bdma_dph | dma_start\);) show
16 mp_a_x mul 588 moveto (bdma_dval <= { bdma_dval[0], bdma_val };) show
8 mp_a_x mul 576 moveto (end) show
8 mp_a_x mul 552 moveto (assign bdma_val = dma_start | bdma_dph;) show
8 mp_a_x mul 540 moveto (assign dma_len_dec = bdma_dval[0];) show
8 mp_a_x mul 528 moveto (assign dma_addr_inc = bdma_ack;) show
8 mp_a_x mul 516 moveto (assign dev_addr_inc = bdma_dval[0];) show
8 mp_a_x mul 492 moveto (....) show
8 mp_a_x mul 468 moveto (// aes data count;) show
8 mp_a_x mul 456 moveto (// amount of data that has passed the aes process;) show
8 mp_a_x mul 444 moveto (// kick burst dma when enough data to fill a dma cycle;) show
8 mp_a_x mul 420 moveto (wire dev_off_nz;) show
40 mp_a_x mul 420 moveto (// dev_addr not aligned to aes blocks;) show
8 mp_a_x mul 408 moveto (reg [10:1] aesp_cnt;) show
32 mp_a_x mul 408 moveto (// data count;) show
8 mp_a_x mul 396 moveto (wire aesp_cnt_inc;) show
40 mp_a_x mul 396 moveto (// aes done with another double-word;) show
8 mp_a_x mul 384 moveto (wire aesp_cnt_dec;) show
40 mp_a_x mul 384 moveto (// bdma moved another word;) show
8 mp_a_x mul 360 moveto (assign dev_off_nz = \(dev_addr[3:1] != 3'd0\);) show
8 mp_a_x mul 336 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 324 moveto (begin) show
16 mp_a_x mul 312 moveto (if\(proc_start\) begin) show
24 mp_a_x mul 300 moveto (aesp_cnt[10:4] <= {7{dev_off_nz}};) show
24 mp_a_x mul 288 moveto (aesp_cnt[3:1] <= \(~dev_addr[3:1] + 1\);) show
16 mp_a_x mul 276 moveto (end if\(aesp_cnt_inc & ~aesp_cnt_dec\)) show
24 mp_a_x mul 264 moveto (aesp_cnt <= aesp_cnt + 4;) show
16 mp_a_x mul 252 moveto (else if\(aesp_cnt_dec & ~aesp_cnt_inc\)) show
24 mp_a_x mul 240 moveto (aesp_cnt <= aesp_cnt - 4;) show
16 mp_a_x mul 228 moveto (bdma_aesp <= proc_busy & ~aesp_cnt[10]) show
24 mp_a_x mul 216 moveto (& \(aesp_cnt[9:1] > { 3'd0, bdma_len[6:1] }\);) show
8 mp_a_x mul 204 moveto (end) show
8 mp_a_x mul 180 moveto (assign aesp_cnt_inc = aes_dw;) show
8 mp_a_x mul 168 moveto (assign aesp_cnt_dec = bdma_dval[0];) show
8 mp_a_x mul 156 moveto (assign proc_rblk = ~aesp_cnt[10] & |aesp_cnt[9:8];) show
8 mp_a_x mul 132 moveto (// assertions;) show
8 mp_a_x mul 120 moveto (// synopsys translate_off) show
8 mp_a_x mul 96 moveto (always @\(posedge sysclk\)) show
8 mp_a_x mul 84 moveto (begin) show
16 mp_a_x mul 72 moveto (if\(proc_busy & aesp_cnt[10] & aesp_cnt_dec\)) show
24 mp_a_x mul 60 moveto ($display\("ERROR: %t: %M: bdma overran aes", $time\);) show
8 mp_a_x mul 48 moveto (end) show
8 mp_a_x mul 24 moveto (// synopsys translate_on) show
0 0 moveto (endmodule) show
grestore
gsave
306 18 translate
0 0 moveto 0 378 rlineto 288 0 rlineto 0 -378 rlineto closepath clip
288 80 mp_a_x mul div 378 792 div scale
4 7 translate 280 288 div 784 792 div scale
textfont setfont
grestore
restore
showpage
%%Trailer
%%Pages: 1