From af0b6231ca583da69e9ca35d73b1794c2003768b Mon Sep 17 00:00:00 2001
From: Virgil Dupras <hsoft@hardcoded.net>
Date: Tue, 23 Jul 2019 16:13:52 -0400
Subject: [PATCH] recipes/sms/romasm: make ed's memory usage fit the SMS

Yup, that's ultimately why I've just made this whole big zasm
refactoring in the previous commits. To allow for this.

But also, zasm is in much better shape now...
---
 apps/ed/buf.asm                | 11 ++---------
 apps/ed/glue.asm               | 10 +++++++++-
 recipes/sms/romasm/user-tmpl.h |  3 +++
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/apps/ed/buf.asm b/apps/ed/buf.asm
index 988f191..20b19b6 100644
--- a/apps/ed/buf.asm
+++ b/apps/ed/buf.asm
@@ -1,12 +1,5 @@
 ; buf - manage line buffer
 ;
-; *** Consts ***
-;
-; Maximum number of lines allowed in the buffer.
-.equ	BUF_MAXLINES	0x800
-; Size of our scratchpad
-.equ	BUF_PADMAXLEN	0x1000
-
 ; *** Variables ***
 ; Number of lines currently in the buffer
 .equ	BUF_LINECNT	BUF_RAMSTART
@@ -14,11 +7,11 @@
 .equ	BUF_LINES	BUF_LINECNT+2
 ; Points to the end of the scratchpad, that is, one byte after the last written
 ; char in it.
-.equ	BUF_PADEND	BUF_LINES+BUF_MAXLINES*2
+.equ	BUF_PADEND	BUF_LINES+ED_BUF_MAXLINES*2
 ; The in-memory scratchpad
 .equ	BUF_PAD		BUF_PADEND+2
 
-.equ	BUF_RAMEND	BUF_PAD+BUF_PADMAXLEN
+.equ	BUF_RAMEND	BUF_PAD+ED_BUF_PADMAXLEN
 
 ; *** Code ***
 
diff --git a/apps/ed/glue.asm b/apps/ed/glue.asm
index 5a5a5cb..5956aed 100644
--- a/apps/ed/glue.asm
+++ b/apps/ed/glue.asm
@@ -1,4 +1,13 @@
 #include "user.h"
+
+; *** Overridable consts ***
+; Maximum number of lines allowed in the buffer.
+.equ	ED_BUF_MAXLINES		0x800
+; Size of our scratchpad
+.equ	ED_BUF_PADMAXLEN	0x1000
+
+; ******
+
 #include "err.h"
 .org	USER_CODE
 
@@ -14,4 +23,3 @@
 #include "ed/cmd.asm"
 .equ	ED_RAMSTART	CMD_RAMEND
 #include "ed/main.asm"
-
diff --git a/recipes/sms/romasm/user-tmpl.h b/recipes/sms/romasm/user-tmpl.h
index cbcfd20..ba23a5b 100644
--- a/recipes/sms/romasm/user-tmpl.h
+++ b/recipes/sms/romasm/user-tmpl.h
@@ -4,6 +4,9 @@
 .equ    USER_RAMSTART   0xc200
 .equ    FS_HANDLE_SIZE  6
 .equ    BLOCKDEV_SIZE   8
+; Make ed fit in SMS's memory
+.equ    ED_BUF_MAXLINES 0x100
+.equ    ED_BUF_PADMAXLEN 0x800
 
 ; *** JUMP TABLE ***
 .equ	strncmp			0x03