... goes line by line updating the screen:

1 ? If the line is ... that line.
4 ? Update pointers and go to the next line, until ... the whole screen is done.
screen between steps 2 & 3, that line will ...

... DE not HL as the screen pointer. Also it doesn't ... if it's a valid screen address, it just does it ... ;returns with DE pointing at next pixel line up in Display File ... /> ;
nextlinedown ;converts de to next line down in Display file, modified ...

...
.msgprt ld de,$5068 ; screen memory where messages will appear
screen
inc d ; point DE to next pixel ... row on screen
inc hl ... screen memory
inc e ; point DE to next character in screen memory< ...

... log it in again the next time you want to use ... [/url]), particularly in the 24x80 screen. Amstrad-specific programs may work ... probably assume the 32x90 PCW screen. When I made my archive ... +3's 32x24 screen.

(Aside: Per-line checksums of BASIC ...

... the poor quality CPUCLK line may have something to ... because the Y video line isn't presented at ... color=orange]SPECTRA indicates Y line not present. A mod ... N/A - no Y line for SPECTRA[/color]
... Garbage (random pixels) on screen/memory. Locked up after LINK ...

... : READ b: POKE a,b: NEXT a:
PRINT AT s ... -(22 AND s=21):
NEXT s
1002 DATA 233 ... 's idea without altering the screen (or anywhere else, for that ... HL = the address of the next line.

... 's idea without altering the screen (or anywhere else, for that ... HL = the address of the next line.[/QUOTE]

But then ...

... save it, with a LINE command to auto-run, ...
Then load your screen into the emulator - simplest way ... 0 then copies the screen memory up to 32768. Run ... paused, import a saved screen into the emulator, then ... either CODE 16384,6912 or SCREEN$.

Now ...

... line 1, just the first line of whatever's in memory ... lost" error if the line being executed had moved. Using ... will continue loading from the next line.

--

... Fixed the broken line handling as well.

... first line length, then MERGE will fail with "Out of memory". ... However, before executing any line the ROM calculates ... the starting address of the next line, at $1BBF LINE_USE, held ... start to find that line, using the line lengths to do ...

... ). I use this to load memory address 32499 ($7EF3) with what ... /> C2 06 7F JP NZ next button check
CB C2 ... /> C2 0E 7F JP NZ next button check
C9 STOP ... /> C2 1A 7F JP NZ next button check
CB CA ... /> C3 C5 7F Back to next line of MAIN

... data patterns. But the memory cells aren't there and ... things while there is no memory, and is senselessly (and ... the address occupation 'passes' the screen memory area about every second.
line signals be found on the lower memory data lines ...

... data patterns. But the memory cells aren't there and ... things while there is no memory, and is senselessly (and ... the address occupation 'passes' the screen memory area about every second.
line signals be found on the lower memory data lines ...

... :

* A BASIC line may be split across multiple ... lines manually.

* Line numbers do not need to ... and loading resumed from the next line.

plus:
< ... an existing program already in memory (although BAS2TAP can do that ...

... platforms of interest in this line of work). There is a ... with the binary contents of memory, allows easy transfer of binary ... to highlight on the emulated screen where the beam is at ... some ways of visualising the screen memory as it is being written ...

... counter updates etc), the memory itself only produces contention ... my experience with double screen buffer blitting, efficient blitters ... every time you access screen memory, you have 8 possible ... per screen memory access. Using words halves this value, in line ...

... random accessess to screen memory during the screen drawing using PUSH we ... the exact delay for the next instruction(s) is deterministic ... further. The memory is only contended during the screen drawing, ... means that the contented screen accesses can happen only ...

... they both produce the full screen horizon effects correctly however the ... versa). So just because the next write isn't to that ... must update the screen by popping bytes to the screen memory.

screen.

However, thinking ...

... the intro screen. Maybe some kind of memory allocation?[/ ... next 256 bytes are reserved for ZX BASIC heap. Finally the memory ... only decompressed to either screen or upper memory as needed. This way ... /> '
' During menu screen, memory is used as follows:

... the start addresses of each line is a good idea, if ... memory fiddling tips - if you only use 2/3 of the screen ... must use every pixel line of the screen, consider having the high ... of your sprites - anything off-screen is simply diverted away from screen memory.

... find that line.

The 128k editor maintains a screen buffer ... what is shown on the screen. When it does a relist ... line 10 before it finds the next line, so it never prints that next line ... have an editor screen buffer as it uses a line editor and ...

... line has a link to the next one, so when you change line ... 1 to line 10, the next line number is ... all. Every line is stored in memory sequentially, and ... the previous or the next line. If you edit a ... program and insert a line with a number between ...

... of the sprite, so your screen addresses INC by 1 byte ... 1 byte to write the next line right-to-left. That way ... reset or subtract from the screen address. Though that only seems ...

... contened zone (writing to contended memory from uncontended buffer), only the ... delay at the start of screen for each line.

... data into contended memory (typically from buffer to screen) simply switching ... from normal to shadow screen instead.

[QUOTE ... at the start of screen for each line.[/QUOTE]

... />
BTW each scan line in 48K models is 224T ...

... to the centre of the screen.
This starts from ... at the end of each line of colour data in the ... is a pointer to the next line, so as it is processed ... people will gather around a screen. So my extra bit ... lot easier...

Next step is to add sprite ...

... hl ; variable address to temporary memory area
fwait ; enter ... br /> data_1:
call scanning ; next expression
cp ',' ; comma?< ... /> call line_addr ; get address of line or next line
dec hl ; point ...

... br /> call cls_lower ; clear lower screen
pop af ; restore report ... it
call get_line ; get next line number
pop de ; unstack ... ' ; channel
defw print_out, report_j ; screen
defb 'S' ; channel